History of Delhi Sultanate

The Delhi Sultanate was an Islamic empire based in Delhi that stretched over large parts of the Indian subcontinent for 320 years (1206–1526). Five dynasties ruled over the Delhi Sultanate sequentially: the Mamluk dynasty (1206–90), the Khalji dynasty (1290–1320), the Tughlaq dynasty (1320–1414), the Sayyid dynasty (1414–51), and the Lodi dynasty (1451–1526). The sultanate is noted for being one of the few powers to repel attacks by the Mongols (from the Chagatai Khanate), causing the decline of Buddhism in East India and Bengal, and enthroning one of the few female rulers in Islamic history, Razia Sultana, who reigned from 1236 to 1240.

Qutb al-Din Aibak, a former Turkic Mamluk slave of Muhammad Ghori was the first sultan of Delhi, and his Mamluk dynasty conquered large areas of northern India. Afterwards, the Khalji dynasty was also able to conquer most of central India, but both failed to conquer the whole of the Indian subcontinent. The sultanate reached the peak of its geographical reach during the Tughlaq dynasty, occupying most of the Indian subcontinent. This was followed by decline due to Hindu reconquests, states such as the Vijayanagara Empire and Mewar asserting independence, and new Muslim sultanates such as the Bengal Sultanate breaking off.

During and in the Delhi Sultanate, there was a synthesis of Indian civilization with that of Islamic civilization, and the further integration of the Indian subcontinent with a growing world system and wider international networks spanning large parts of Afro-Eurasia, which had a significant impact on Indian culture and society, as well as the wider world. The time of their rule included the earliest forms of Indo-Islamic architecture, greater use of mechanical technology, increased growth rates in India's population and economy, and the emergence of the Hindustani language. The Delhi Sultanate was also responsible for repelling the Mongol Empire's potentially devastating invasions of India in the 13th and 14th centuries. The Delhi Sultanate was also responsible for large-scale destruction and desecration of temples in the Indian subcontinent. In 1526, the Sultanate was conquered and succeeded by the Mughal Empire.

Background
The context behind the rise of the Delhi Sultanate in India was part of a wider trend affecting much of the Asian continent, including the whole of southern and western Asia: the influx of nomadic Turkic peoples from the Central Asian steppes. This can be traced back to the 9th century, when the Islamic Caliphate began fragmenting in the Middle East, where Muslim rulers in rival states began enslaving non-Muslim nomadic Turks from the Central Asian steppes, and raising many of them to become loyal military slaves called Mamluks. Soon, Turks were migrating to Muslim lands and becoming Islamicized. Many of the Turkic Mamluk slaves eventually rose up to become rulers, and conquered large parts of the Muslim world, establishing Mamluk Sultanates from Egypt to Afghanistan, before turning their attention to the Indian subcontinent.

It is also part of a longer trend predating the spread of Islam. Like other settled, agrarian societies in history, those in the Indian subcontinent have been attacked by nomadic tribes throughout its long history. In evaluating the impact of Islam on the subcontinent, one must note that the northwestern subcontinent was a frequent target of tribes raiding from Central Asia in the pre-Islamic era. In that sense, the Muslim intrusions and later Muslim invasions were not dissimilar to those of the earlier invasions during the 1st millennium.

By 962 AD, Hindu and Buddhist kingdoms in South Asia were under a wave of raids from Muslim armies from Central Asia. Among them was Mahmud of Ghazni, the son of a Turkic Mamluk military slave, who raided and plundered kingdoms in north India from east of the Indus river to west of Yamuna river seventeen times between 997 and 1030. Mahmud of Ghazni raided the treasuries but retracted each time, only extending Islamic rule into western Punjab.

The wave of raids on north Indian and western Indian kingdoms by Muslim warlords continued after Mahmud of Ghazni. The raids did not establish or extend permanent boundaries of their Islamic kingdoms. The Ghurid sultan Mu'izz ad-Din Muhammad Ghori, commonly known as Muhammad of Ghor, began a systematic war of expansion into north India in 1173. He sought to carve out a principality for himself by expanding the Islamic world. Muhammad of Ghor sought a Sunni Islamic kingdom of his own extending east of the Indus river, and he thus laid the foundation for the Muslim kingdom called the Delhi Sultanate. Some historians chronicle the Delhi Sultanate from 1192 due to the presence and geographical claims of Muhammad Ghori in South Asia by that time.

Ghori was assassinated in 1206, by Ismāʿīlī Shia Muslims in some accounts or by Hindu Khokhars in others. After the assassination, one of Ghori's slaves (or mamluks, Arabic: مملوك), the Turkic Qutb al-Din Aibak, assumed power, becoming the first Sultan of Delhi.

Dynasties

Mamluk (Slave origin)
Qutb al-Din Aibak, a former slave of Mu'izz ad-Din Muhammad Ghori (known more commonly as Muhammad of Ghor), was the first ruler of the Delhi Sultanate. Aibak was of Cuman-Kipchak (Turkic) origin, and due to his lineage, his dynasty is known as the Mamluk (Slave origin) dynasty (not to be confused with the Mamluk dynasty of Iraq or the Mamluk dynasty of Egypt). Aibak reigned as the Sultan of Delhi for four years, from 1206 to 1210.

After Aibak died, Aram Shah assumed power in 1210, but he was assassinated in 1211 by Shams ud-Din Iltutmish. Iltutmish's power was precarious, and a number of Muslim amirs (nobles) challenged his authority as they had been supporters of Qutb al-Din Aibak. After a series of conquests and brutal executions of opposition, Iltutmish consolidated his power. His rule was challenged a number of times, such as by Qubacha, and this led to a series of wars. Iltutmish conquered Multan and Bengal from contesting Muslim rulers, as well as Ranthambore and Siwalik from the Hindu rulers. He also attacked, defeated, and executed Taj al-Din Yildiz, who asserted his rights as heir to Mu'izz ad-Din Muhammad Ghori. Iltutmish's rule lasted till 1236. Following his death, the Delhi Sultanate saw a succession of weak rulers, disputing Muslim nobility, assassinations, and short-lived tenures. Power shifted from Rukn ud-Din Firuz to Razia Sultana and others, until Ghiyas ud-Din Balban came to power and ruled from 1266 to 1287. He was succeeded by 17-year-old Muiz ud-Din Qaiqabad, who appointed Jalal ud-Din Firuz Khalji as the commander of the army. Khalji assassinated Qaiqabad and assumed power, thus ending the Mamluk dynasty and starting the Khalji dynasty.

Qutb al-Din Aibak initiated the construction of the Qutub Minar and the Quwwat-ul-Islam (Might of Islam) Mosque, now a UNESCO world heritage site. The Qutub Minar Complex or Qutb Complex was expanded by Iltutmish, and later by Ala ud-Din Khalji (the second ruler of the Khalji dynasty) in the early 14th century. During the Mamluk dynasty, many nobles from Afghanistan and Persia migrated and settled in India, as West Asia came under Mongol siege.

Khaljis
The Khalji dynasty was of Turko-Afghan heritage. They were originally of Turkic origin. They had long been settled in present-day Afghanistan before proceeding to Delhi in India. The name "Khalji" refers to an Afghan village or town known as Qalat-e Khalji (Fort of Ghilji). They were treated by others as ethnic Afghans due to their intermarraiges with local Afghans, adoption of Afghan habits and customs. As a result of this, the dynasty is referred to as Turko-Afghan. The dynasty later also had Indian ancestry, through Jhatyapali (daughter of Ramachandra of Devagiri), wife of Alauddin Khalji and mother of Shihabuddin Omar.

The first ruler of the Khalji dynasty was Jalal ud-Din Firuz Khalji. Firuz Khalji had already gathered enough support among the Afghans for taking over the crown. He came to power in 1290 after killing the last ruler of the Mamluk dynasty, Muiz ud-Din Qaiqabad, with the support of Afghan and Turkic nobles. He was around 70 years old at the time of his ascension, and was known as a mild-mannered, humble and kind monarch to the general public. Jalal ud-Din Firuz was of Turko Afghan origin, and ruled for 6 years before he was murdered in 1296 by his nephew and son-in-law Juna Muhammad Khalji, who later came to be known as Ala ud-Din Khalji.

Ala ud-Din began his military career as governor of Kara province, from where he led two raids on Malwa (1292) and Devagiri (1294) for plunder and loot. His military campaigning returned to these lands as well other south Indian kingdoms after he assumed power. He conquered Gujarat, Ranthambore, Chittor, and Malwa. However, these victories were cut short because of Mongol attacks and plunder raids from the northwest. The Mongols withdrew after plundering and stopped raiding northwest parts of the Delhi Sultanate.

After the Mongols withdrew, Ala ud-Din Khalji continued expanding the Delhi Sultanate into southern India with the help of generals such as Malik Kafur and Khusro Khan. They collected lots of war booty (anwatan) from those they defeated. His commanders collected war spoils and paid ghanima (Arabic: الْغَنيمَة, a tax on spoils of war), which helped strengthen the Khalji rule. Among the spoils was the Warangal loot that included the famous Koh-i-noor diamond.

Ala ud-Din Khalji changed tax policies, raising agriculture taxes from 20% to 50% (payable in grain and agricultural produce), eliminating payments and commissions on taxes collected by local chiefs, banned socialization among his officials as well as inter-marriage between noble families to help prevent any opposition forming against him, and he cut salaries of officials, poets, and scholars. These tax policies and spending controls strengthened his treasury to pay the keep of his growing army; he also introduced price controls on all agriculture produce and goods in the kingdom, as well as controls on where, how, and by whom these goods could be sold. Markets called "shahana-i-mandi" were created. Muslim merchants were granted exclusive permits and monopoly in these "mandis" to buy and resell at official prices. No one other than these merchants could buy from farmers or sell in cities. Those found violating these "mandi" rules were severely punished, often by mutilation. Taxes collected in the form of grain were stored in the kingdom's storage. During famines that followed, these granaries ensured sufficient food for the army.

Historians note Ala ud-Din Khalji as being a tyrant. Anyone Ala ud-Din suspected of being a threat to this power was killed along with the women and children of that family. In 1298, between 15,000 and 30,000 people near Delhi, who had recently converted to Islam, were slaughtered in a single day, due to fears of an uprising. He is also known for his cruelty against kingdoms he defeated in battle.

After Ala ud-Din's death in 1316, his eunuch general Malik Kafur, who was born in a Hindu family in India and had converted to Islam, tried to assume power. He lacked the support of Persian and Turkic nobility and was subsequently killed. The last Khalji ruler was Ala ud-Din Khalji's 18-year-old son Qutb ud-Din Mubarak Shah Khalji, who ruled for four years before he was killed by Khusro Khan, another of Ala ud-Din's generals. Khusro Khan's reign lasted only a few months, when Ghazi Malik, later to be called Ghiyath al-Din Tughlaq, killed him and assumed power in 1320, thus ending the Khalji dynasty and starting the Tughlaq dynasty.

Tughlaq
The Tughlaq dynasty lasted from 1320 to nearly the end of the 14th century. The first ruler Ghazi Malik rechristened himself as Ghiyath al-Din Tughlaq and is also referred to in scholarly works as Tughlak Shah. He was of Turko-Indian origins; his father was a Turkic slave and his mother was a Hindu. Ghiyath al-Din ruled for five years and built a town near Delhi named Tughlaqabad. According to some historians such as Vincent Smith, he was killed by his son Juna Khan, who then assumed power in 1325. Juna Khan rechristened himself as Muhammad bin Tughlaq and ruled for 26 years. During his rule, Delhi Sultanate reached its peak in terms of geographical reach, covering most of the Indian subcontinent.

Muhammad bin Tughlaq was an intellectual, with extensive knowledge of the Quran, Fiqh, poetry and other fields. He was also deeply suspicious of his kinsmen and wazirs (ministers), extremely severe with his opponents, and took decisions that caused economic upheaval. For example, he ordered minting of coins from base metals with face value of silver coins - a decision that failed because ordinary people minted counterfeit coins from base metal they had in their houses and used them to pay taxes and jizya.

On another occasion, after becoming upset by some accounts, or to run the Sultanate from the center of India by other accounts, Muhammad bin Tughlaq ordered the transfer of his capital from Delhi to Devagiri in modern-day Maharashtra (renaming it to Daulatabad), by forcing the mass migration of Delhi's population. Those who refused were killed. One blind person who failed to move to Daulatabad was dragged for the entire journey of 40 days - the man died, his body fell apart, and only his tied leg reached Daulatabad. The capital move failed because Daulatabad was arid and did not have enough drinking water to support the new capital. The capital then returned to Delhi. Nevertheless, Muhammad bin Tughlaq's orders affected history as a large number of Delhi Muslims who came to the Deccan area did not return to Delhi to live near Muhammad bin Tughlaq. This influx of the then-Delhi residents into the Deccan region led to a growth of Muslim population in central and southern India. Muhammad bin Tughlaq's adventures in the Deccan region also marked campaigns of destruction and desecration of Hindu and Jain temples, for example the Swayambhu Shiva Temple and the Thousand Pillar Temple.

Revolts against Muhammad bin Tughlaq began in 1327, continued over his reign, and over time the geographical reach of the Sultanate shrunk. The Vijayanagara Empire originated in southern India as a direct response to attacks from the Delhi Sultanate., and liberated south India from the Delhi Sultanate's rule. In 1337, Muhammad bin Tughlaq ordered an attack on China, sending part of his forces over the Himalayas. Few survived the journey, and they were executed upon their return for failing. During his reign, state revenues collapsed from his policies such as the base metal coins from 1329-1332. To cover state expenses, he sharply raised taxes. Those who failed to pay taxes were hunted and executed. Famines, widespread poverty, and rebellion grew across the kingdom. In 1338 his own nephew rebelled in Malwa, whom he attacked, caught, and flayed alive. By 1339, the eastern regions under local Muslim governors and southern parts led by Hindu kings had revolted and declared independence from the Delhi Sultanate. Muhammad bin Tughlaq did not have the resources or support to respond to the shrinking kingdom. The historian Walford chronicled Delhi and most of India faced severe famines during Muhammad bin Tughlaq's rule in the years after the base metal coin experiment. By 1347, the Bahmani Sultanate had become an independent and competing Muslim kingdom in Deccan region of South Asia.

Muhammad bin Tughlaq died in 1351 while trying to chase and punish people in Gujarat who were rebelling against the Delhi Sultanate. He was succeeded by Firuz Shah Tughlaq (1351–1388), who tried to regain the old kingdom boundary by waging a war with Bengal for 11 months in 1359. However, Bengal did not fall. Firuz Shah ruled for 37 years. His reign attempted to stabilize the food supply and reduce famines by commissioning an irrigation canal from the Yamuna river. An educated sultan, Firuz Shah left a memoir. In it he wrote that he banned the practice of torture, such as amputations, tearing out of eyes, sawing people alive, crushing people's bones as punishment, pouring molten lead into throats, setting people on fire, driving nails into hands and feet, among others. He also wrote that he did not tolerate attempts by Rafawiz Shia Muslim and Mahdi sects from proselytizing people into their faith, nor did he tolerate Hindus who tried to rebuild temples that his armies had destroyed. As punishment for proselytizing, Firuz Shah put many Shias, Mahdi, and Hindus to death (siyasat). Firuz Shah Tughlaq also lists his accomplishments to include converting Hindus to Sunni Islam by announcing an exemption from taxes and jizya for those who convert, and by lavishing new converts with presents and honours. Simultaneously, he raised taxes and jizya, assessing it at three levels, and stopping the practice of his predecessors who had historically exempted all Hindu Brahmins from the jizya. He also vastly expanded the number of slaves in his service and those of Muslim nobles. The reign of Firuz Shah Tughlaq was marked by reduction in extreme forms of torture, eliminating favours to select parts of society, but also increased intolerance and persecution of targeted groups.

The death of Firuz Shah Tughlaq created anarchy and disintegration of the kingdom. The last rulers of this dynasty both called themselves Sultan from 1394 to 1397: Nasir ud-Din Mahmud Shah Tughlaq, the grandson of Firuz Shah Tughlaq who ruled from Delhi, and Nasir ud-Din Nusrat Shah Tughlaq, another relative of Firuz Shah Tughlaq who ruled from Firozabad, which was a few miles from Delhi. The battle between the two relatives continued till Timur's invasion in 1398. Timur, also known as Tamerlane in Western scholarly literature, was the Turkic ruler of the Timurid Empire. He became aware of the weakness and quarreling of the rulers of the Delhi Sultanate, so he marched with his army to Delhi, plundering and killing all the way. Estimates for the massacre by Timur in Dehli range from 100,000 to 200,000 people. Timur had no intention of staying in or ruling India. He looted the lands he crossed, then plundered and burnt Delhi. Over five days, Timur and his army raged a massacre. Then he collected and carried the wealth, captured women and slaves (particularly skilled artisans), and returned to Samarkand. The people and lands within the Delhi Sultanate were left in a state of anarchy, chaos, and pestilence. Nasir ud-Din Mahmud Shah Tughlaq, who had fled to Gujarat during Timur's invasion, returned and nominally ruled as the last ruler of Tughlaq dynasty, as a puppet of various factions at the court.

Sayyid
The Sayyid dynasty was a Turkic dynasty that ruled the Delhi Sultanate from 1415 to 1451. The Timurid invasion and plunder had left the Delhi Sultanate in shambles, and little is known about the rule by the Sayyid dynasty. Annemarie Schimmel notes the first ruler of the dynasty as Khizr Khan, who assumed power by claiming to represent Timur. His authority was questioned even by those near Delhi. His successor was Mubarak Khan, who rechristened himself as Mubarak Shah and tried to regain lost territories in Punjab, unsuccessfully.

With the power of the Sayyid dynasty faltering, Islam's history on the Indian subcontinent underwent a profound change, according to Schimmel. The previously dominant Sunni sect of Islam became diluted, alternate Muslim sects such as Shia rose, and new competing centers of Islamic culture took roots beyond Delhi.

The Sayyid dynasty was displaced by the Lodi dynasty in 1451.

Lodi
The Lodi dynasty belonged to the Pashtun (Afghan) Lodi tribe. Bahlul Khan Lodi started the Lodi dynasty and was the first Pashtun, to rule the Delhi Sultanate. Bahlul Lodi began his reign by attacking the Muslim Jaunpur Sultanate to expand the influence of the Delhi Sultanate, and was partially successful through a treaty. Thereafter, the region from Delhi to Varanasi (then at the border of Bengal province), was back under influence of Delhi Sultanate.

After Bahlul Lodi died, his son Nizam Khan assumed power, rechristened himself as Sikandar Lodi and ruled from 1489 to 1517. One of the better known rulers of the dynasty, Sikandar Lodi expelled his brother Barbak Shah from Jaunpur, installed his son Jalal Khan as the ruler, then proceeded east to make claims on Bihar. The Muslim governors of Bihar agreed to pay tribute and taxes, but operated independent of the Delhi Sultanate. Sikandar Lodi led a campaign of destruction of temples, particularly around Mathura. He also moved his capital and court from Delhi to Agra, an ancient Hindu city that had been destroyed during the plunder and attacks of the early Delhi Sultanate period. Sikandar thus erected buildings with Indo-Islamic architecture in Agra during his rule, and the growth of Agra continued during the Mughal Empire, after the end of the Delhi Sultanate.

Sikandar Lodi died a natural death in 1517, and his second son Ibrahim Lodi assumed power. Ibrahim did not enjoy the support of Afghan and Persian nobles or regional chiefs. Ibrahim attacked and killed his elder brother Jalal Khan, who was installed as the governor of Jaunpur by his father and had the support of the amirs and chiefs. Ibrahim Lodi was unable to consolidate his power, and after Jalal Khan's death, the governor of Punjab, Daulat Khan Lodi, reached out to the Mughal Babur and invited him to attack the Delhi Sultanate. Babur defeated and killed Ibrahim Lodi in the Battle of Panipat in 1526. The death of Ibrahim Lodi ended the Delhi Sultanate, and the Mughal Empire replaced it.

Economy
Before and during the Delhi Sultanate, the Islamic civilization of the Middle Ages had wide-ranging international networks, including social and economic networks, spanning large parts of Afro-Eurasia, leading to escalating circulation of goods, peoples, technologies and ideas. While initially disruptive due to the passing of power from native Indian elites to Turkic Muslim elites, the Delhi Sultanate was responsible for integrating the Indian subcontinent into a growing world system, drawing India into a wider international network.

The economist Angus Maddison has estimated that, during the Medieval Delhi Sultanate era, between 1000 and 1500, India's GDP, of which the sultanates represented a significant part, grew nearly 80% up to $60.5 billion in 1500.

The Delhi Sultanate period coincided with a greater use of mechanical technology in the Indian subcontinent. While India previously already had sophisticated agriculture, food crops, textiles, medicine, minerals, and metals, it was not as sophisticated as the Islamic world or China in terms of mechanical technology. Prior to the 13th century, there was no evidence of India having water-raising wheels with gears, or other machines with gears, pulleys, cams or cranks. These mechanical technologies were introduced from the Islamic world to India from the 13th century onwards. The Delhi Sultanate was largely responsible for the spread of papermaking from the Islamic world to the Indian subcontinent. Prior to the Delhi Sultanate, papermaking in the Indian subcontinent was largely limited to northwestern regions that were either under Muslim rule (the Sindh and Punjab regions) or with Muslim traders (Gujarat). Paper manufacturing eventually became widespread across Northern India following the establishment of the Delhi Sultanate in the 13th century, and eventually spread to Southern India between the 15th and 16th centuries. It was also during the Delhi Sultanate period that the spinning wheel spread across the Indian subcontinent. Early references to cotton spinning in India are vague and do not clearly identify a wheel, but more likely refer to hand spinning. The earliest unambiguous reference to a spinning wheel in India is dated to 1350, suggesting that the spinning wheel was likely introduced from Iran to India.

The worm gear roller cotton gin was invented in the Indian subcontinent during the early Delhi Sultanate era of the 13th–14th centuries, and is still used in India through to the present day. Another innovation, the incorporation of the crank handle in the cotton gin, first appeared in the Indian subcontinent some time during the late Delhi Sultanate or the early Mughal Empire. The production of cotton, which may have largely been spun in the villages and then taken to towns in the form of yarn to be woven into cloth textiles, was advanced by the diffusion of the spinning wheel across India during the Delhi Sultanate era, lowering the costs of yarn and helping to increase demand for cotton. The diffusion of the spinning wheel, and the incorporation of the worm gear and crank handle into the roller cotton gin, led to greatly expanded Indian cotton textile production.

Government and politics
The Delhi Sultanate continued the governmental conventions of the previous Hindu polities, claiming paramountcy rather than exclusive supreme control. Accordingly, it did not interfere with the autonomy and military of conquered Hindu rulers, and freely included Hindu vassals and officials.

Demographics
According to one set of the very uncertain estimates of modern historians, the total Indian population had largely been stagnant at 75 million during the Middle Kingdoms era from 1 AD to 1000 AD. During the Medieval Delhi Sultanate era from 1000 to 1500, India as a whole experienced lasting population growth for the first time in a thousand years, with its population increasing nearly 50% to 110 million by 1500 AD.

Culture
While the Indian subcontinent has had invaders from Central Asia since ancient times, what made the Muslim invasions different is that unlike the preceding invaders who assimilated into the prevalent social system, the successful Muslim conquerors retained their Islamic identity and created new legal and administrative systems that challenged and usually in many cases superseded the existing systems of social conduct and ethics, even influencing the non-Muslim rivals and common masses to a large extent, though the non-Muslim population was left to their own laws and customs. They also introduced new cultural codes that in some ways were very different from the existing cultural codes. This led to the rise of a new Indian culture which was mixed in nature, different from ancient Indian culture. The overwhelming majority of Muslims in India were Indian natives converted to Islam. This factor also played an important role in the synthesis of cultures.

The Hindustani language (Hindi/Urdu) began to emerge in the Delhi Sultanate period, developed from the Middle Indo-Aryan apabhramsha vernaculars of North India. Amir Khusro, who lived in the 13th century CE during the Delhi Sultanate period in North India, used a form of Hindustani, which was the lingua franca of the period, in his writings and referred to it as Hindavi.

Architecture
The start of the Delhi Sultanate in 1206 under Qutb al-Din Aibak introduced a large Islamic state to India, using Central Asian styles. The types and forms of large buildings required by Muslim elites, with mosques and tombs much the most common, were very different from those previously built in India. The exteriors of both were very often topped by large domes, and made extensive use of arches. Both of these features were hardly used in Hindu temple architecture and other indigenous Indian styles. Both types of building essentially consist of a single large space under a high dome, and completely avoid the figurative sculpture so important to Hindu temple architecture.

The important Qutb Complex in Delhi was begun under Muhammad of Ghor, by 1199, and continued under Qutb al-Din Aibak and later sultans. The Quwwat-ul-Islam Mosque, now a ruin, was the first structure. Like other early Islamic buildings it re-used elements such as columns from destroyed Hindu and Jain temples, including one on the same site whose platform was reused. The style was Iranian, but the arches were still corbelled in the traditional Indian way.

Beside it is the extremely tall Qutb Minar, a minaret or victory tower, whose original four stages reach 73 meters (with a final stage added later). Its closest comparator is the 62-metre all-brick Minaret of Jam in Afghanistan, of c.1190, a decade or so before the probable start of the Delhi tower. The surfaces of both are elaborately decorated with inscriptions and geometric patterns; in Delhi the shaft is fluted with "superb stalactite bracketing under the balconies" at the top of each stage. In general minarets were slow to be used in India, and are often detached from the main mosque where they exist.

The Tomb of Iltutmish was added by 1236; its dome, the squinches again corbelled, is now missing, and the intricate carving has been described as having an "angular harshness", from carvers working in an unfamiliar tradition. Other elements were added to the complex over the next two centuries.

Another very early mosque, begun in the 1190s, is the Adhai Din Ka Jhonpra in Ajmer, Rajasthan, built for the same Delhi rulers, again with corbelled arches and domes. Here Hindu temple columns (and possibly some new ones) are piled up in threes to achieve extra height. Both mosques had large detached screens with pointed corbelled arches added in front of them, probably under Iltutmish a couple of decades later. In these the central arch is taller, in imitation of an iwan. At Ajmer the smaller screen arches are tentatively cusped, for the first time in India.
By around 1300 true domes and arches with voussoirs were being built; the ruined Tomb of Balban (d. 1287) in Delhi may be the earliest survival. The Alai Darwaza gatehouse at the Qutb complex, from 1311, still shows a cautious approach to the new technology, with very thick walls and a shallow dome, only visible from a certain distance or height. Bold contrasting colours of masonry, with red sandstone and white marble, introduce what was to become a common feature of Indo-Islamic architecture, substituting for the polychrome tiles used in Persia and Central Asia. The pointed arches come together slightly at their base, giving a mild horseshoe arch effect, and their internal edges are not cusped but lined with conventionalized "spearhead" projections, possibly representing lotus buds. Jali, stone openwork screens, are introduced here; they already had been long used in temples.

Tughlaq architecture
The tomb of Shah Rukn-e-Alam (built 1320 to 1324) in Multan, Pakistan is a large octagonal brick-built mausoleum with polychrome glazed decoration that remains much closer to the styles of Iran and Afghanistan. Timber is also used internally. This was the earliest major monument of the Tughlaq dynasty (1320–1413), built during the unsustainable expansion of its massive territory. It was built for a Sufi saint rather than a sultan, and most of the many Tughlaq tombs are much less exuberant. The tomb of the founder of the dynasty, Ghiyath al-Din Tughluq (d. 1325) is more austere, but impressive; like a Hindu temple, it is topped with a small amalaka and a round finial like a kalasha. Unlike the buildings mentioned previously, it completely lacks carved texts, and sits in a compound with high walls and battlements. Both these tombs have external walls sloping slightly inwards, by 25° in the Delhi tomb, like many fortifications including the ruined Tughlaqabad Fort opposite the tomb, intended as the new capital.

The Tughlaqs had a corps of government architects and builders, and in this and other roles employed many Hindus. They left many buildings, and a standardized dynastic style. The third sultan, Firuz Shah (r. 1351-88) is said to have designed buildings himself, and was the longest ruler and greatest builder of the dynasty. His Firoz Shah Palace Complex (started 1354) at Hisar, Haryana is a ruin, but parts are in fair condition. Some buildings from his reign take forms that had been rare or unknown in Islamic buildings. He was buried in the large Hauz Khas Complex in Delhi, with many other buildings from his period and the later Sultanate, including several small domed pavilions supported only by columns.

By this time Islamic architecture in India had adopted some features of earlier Indian architecture, such as the use of a high plinth, and often mouldings around its edges, as well as columns and brackets and hypostyle halls. After the death of Firoz the Tughlaqs declined, and the following Delhi dynasties were weak. Most of the monumental buildings constructed were tombs, although the impressive Lodi Gardens in Delhi (adorned with fountains, charbagh gardens, ponds, tombs and mosques) were constructed by the late Lodi dynasty. The architecture of other regional Muslim states was often more impressive.

Military
The bulk of Delhi Sultanate's army consisted of nomadic Turkic Mamluk military slaves, who were skilled in nomadic cavalry warfare. A major military contribution of the Delhi Sultanate was their successful campaigns in repelling the Mongol Empire's invasions of India, which could have been devastating for the Indian subcontinent, like the Mongol invasions of China, Persia and Europe. The Delhi Sultanate's Mamluk army were skilled in the same style of nomadic cavalry warfare used by the Mongols, making them successful in repelling the Mongol invasions, as was the case for the Mamluk Sultanate of Egypt. Were it not for the Delhi Sultanate, it is possible that the Mongol Empire may have been successful in invading India. The strength of the armies changes according to time.

Temple desecration
Historian Richard Eaton has tabulated a campaign of destruction of idols and temples by Delhi Sultans, intermixed with instances of years where the temples were protected from desecration. In his paper, he has listed 37 instances of Hindu temples being desecrated or destroyed in India during the Delhi Sultanate, from 1234 to 1518, for which reasonable evidences are available. He notes that this was not unusual in medieval India, as there were numerous recorded instances of temple desecration by Hindu and Buddhist kings against rival Indian kingdoms between 642 and 1520, involving conflict between devotees of different Hindu deities, as well as between Hindus, Buddhists and Jains. He also noted there were also many instances of Delhi sultans, who often had Hindu ministers, ordering the protection, maintenance and repairing of temples, according to both Muslim and Hindu sources. For example, a Sanskrit inscription notes that Sultan Muhammad bin Tughluq repaired a Siva temple in Bidar after his Deccan conquest. There was often a pattern of Delhi sultans plundering or damaging temples during conquest, and then patronizing or repairing temples after conquest. This pattern came to an end with the Mughal Empire, where Akbar the Great's chief minister Abu'l-Fazl criticized the excesses of earlier sultans such as Mahmud of Ghazni.

In many cases, the demolished remains, rocks and broken statue pieces of temples destroyed by Delhi sultans were reused to build mosques and other buildings. For example, the Qutb complex in Delhi was built from stones of 27 demolished Hindu and Jain temples by some accounts. Similarly, the Muslim mosque in Khanapur, Maharashtra was built from the looted parts and demolished remains of Hindu temples. Muhammad bin Bakhtiyar Khalji destroyed Buddhist and Hindu libraries and their manuscripts at Nalanda and Odantapuri Universities in 1193 AD at the beginning of the Delhi Sultanate.

The first historical record of a campaign of destruction of temples and defacement of faces or heads of Hindu idols lasted from 1193 to 1194 in Rajasthan, Punjab, Haryana and Uttar Pradesh under the command of Ghuri. Under the Mamluks and Khaljis, the campaign of temple desecration expanded to Bihar, Madhya Pradesh, Gujarat and Maharashtra, and continued through the late 13th century. The campaign extended to Telangana, Andhra Pradesh, Karnataka and Tamil Nadu under Malik Kafur and Ulugh Khan in the 14th century, and by the Bahmanis in 15th century. Orissa temples were destroyed in the 14th century under the Tughlaqs.

Beyond destruction and desecration, the sultans of the Delhi Sultanate in some cases had forbidden reconstruction of damaged Hindu, Jain and Buddhist temples, and they prohibited repairs of old temples or construction of any new temples. In certain cases, the Sultanate would grant a permit for repairs and construction of temples if the patron or religious community paid jizya (fee, tax). For example, a proposal by the Chinese to repair Himalayan Buddhist temples destroyed by the Sultanate army was refused, on the grounds that such temple repairs were only allowed if the Chinese agreed to pay jizya tax to the treasury of the Sultanate. In his memoirs, Firoz Shah Tughlaq describes how he destroyed temples and built mosques instead and killed those who dared build new temples. Other historical records from wazirs, amirs and the court historians of various Sultans of the Delhi Sultanate describe the grandeur of idols and temples they witnessed in their campaigns and how these were destroyed and desecrated.

Temple desecration during Delhi Sultanate period, a list prepared by Richard Eaton in Temple Desecration and Indo-Muslim States

Sultan / Agent	Dynasty	Years	Temple Sites Destroyed	States
Muhammad Ghori, Qutb al-Din Aibak	Mamluk	1193-1290	Ajmer, Samana, Kuhram, Delhi, Kol, Varanasi	Rajasthan, Punjab, Haryana, Uttar Pradesh
Muhammad bin Bakhtiyar Khalji, Shams ud-Din Iltumish, Jalal ud-Din Firuz Khalji, Ala ud-Din Khalji, Malik Kafur	Mamluk and Khalji	1290-1320	Nalanda, Odantapuri, Vikramashila, Bhilsa, Ujjain, Jhain, Vijapur, Devagiri, Somnath, Chidambaram, Madurai	Bihar, Madhya Pradesh, Rajasthan, Gujarat, Maharashtra, Tamil Nadu
Ulugh Khan, Firuz Shah Tughlaq, Raja Nahar Khan, Muzaffar Khan	Khalji and Tughlaq	1320-1395	Somnath, Warangal, Bodhan, Pillalamarri, Puri, Sainthali, Idar[140]	Gujarat, Telangana, Orissa, Haryana
Sikandar, Muzaffar Shah, Ahmad Shah, Mahmud	Sayyid	1400-1442	Paraspur, Bijbehara, Tripuresvara, Idar, Diu, Manvi, Sidhpur, Delwara, Kumbhalmer	Gujarat, Rajasthan
Suhrab, Begdha, Bahmani, Khalil Shah, Khawwas Khan, Sikandar Lodi, Ibrahim Lodi	Lodi	1457-1518	Mandalgarh, Malan, Dwarka, Kondapalle, Kanchi, Amod, Nagarkot, Utgir, Narwar, Gwalior	Rajasthan, Gujarat, Himachal Pradesh, Madhya Pradesh

Islamic rulers in the Indian subcontinent

Beginning in the 13th century, several Islamic states were established in the Indian subcontinent in the course of a gradual Muslim conquest in the Indian subcontinent. This process culminated in the Delhi Sultanate, Bengal Sultanate, Deccan sultanates, Mughal Empire, and various other Muslim empires, which ruled most of India during the mid-14th to early-18th centuries, despite being a Hindu majority territory. The height of the Islamic rule was marked during the reign of Mughal Emperor Muhammad Aurangzeb Alamgir which witnessed the full establishment of sharia and Islamic economics across most of the South Asian territories. The Fatwa Alamgiri was compiled and it briefly served as the legal system of Mughal India. Additional Islamic policies were introduced in South India by Mysore king Tipu Sultan. The eventual end of the period of Islamic rule of India is mainly marked with the beginning of British rule, although Islamic rule persisted in Hyderabad State and other minor princely states until the mid of the 20th century. Today's modern Bangladesh, Maldives and Pakistan remain the only Muslim majority nations in the Indian subcontinent.

Delhi Sultanate

During the last quarter of the 12th century, Muhammad of Ghor invaded the Indo-Gangetic plain, conquering in succession Ghazni, Multan, Sindh, Lahore, and Delhi. Qutb-ud-din Aybak, one of his generals proclaimed himself Sultan of Delhi. In the 13th century, Shamsuddīn Iltutmish (1211–1236), established a Turkic kingdom in Delhi, which enabled future sultans to push in every direction; within the next 100 years, the Delhi Sultanate extended its way east to Bengal and south to the Deccan, while the sultanate itself experienced repeated threats from the northwest and internal revolts from displeased, independent-minded nobles. The sultanate was in constant flux as five dynasties, all of either Turkic or Afghan origin, rose and fell: the Slave dynasty (1206–90), Khalji dynasty (1290–1320), Tughlaq dynasty (1320–1413), Sayyid dynasty (1414–51), and Lodi dynasty (1451–1526). The Khalji dynasty, under 'Alā'uddīn (1296–1316), succeeded in bringing most of South India under its control for a time, although conquered areas broke away quickly. Power in Delhi was often gained by violence—nineteen of the thirty-five sultans were assassinated—and was legitimized by reward for tribal loyalty. Factional rivalries and court intrigues were as numerous as they were treacherous; territories controlled by the sultan expanded and shrank depending on his personality and fortunes.

Both the Qur'an and sharia (Islamic law) provided the basis for enforcing Islamic administration over the independent Hindu rulers, but the sultanate made only fitful progress in the beginning when many campaigns were undertaken for plunder and temporary reduction of fortresses. The effective rule of a sultan depended largely on his ability to control the strategic places that dominated the military highways and trade routes, extract the annual land tax, and maintain personal authority over military and provincial governors. Sultan 'Ala ud-Din made an attempt to reassess, systematize, and unify land revenues and urban taxes and to institute a highly centralized system of administration over his realm, but his efforts were abortive. Although agriculture in North India improved as a result of new canal construction and irrigation methods, including what came to be known as the Persian wheel, prolonged political instability and parasitic methods of tax collection brutalized the peasantry. Yet trade and a market economy, encouraged by the free-spending habits of the aristocracy, acquired new impetus both in and overseas. Experts in metalwork, stonework, and textile manufacture responded to the new patronage with enthusiasm. In this period Persian language and many Persian cultural aspects became dominant in the centers of power in Meric'a, as the rulers of the Delhi Sultanate (who, though being Turkish or Afghan, had been thoroughly Persianized since the era of the Ghaznavids) patronized aspects of the foreign culture and language from their seat of power in India.

Bengal Sultanate

In 1339, the Bengal region became independent from the Delhi Sultanate and consisted of numerous Islamic city-states. The Bengal Sultanate was formed in 1352 after Shamsuddin Ilyas Shah, ruler of Satgaon, defeated Alauddin Ali Shah of Lakhnauti and Ikhtiyaruddin Ghazi Shah of Sonargaon; ultimately unifying Bengal into one single independent Sultanate. At its greatest extent, the Bengal Sultanate's realm and protectorates stretched from Jaunpur in the west, Tripura and Arakan in the east, Kamrup and Kamata in the north and Puri in the south.

Although a Sunni Muslim monarchy ruled by Turco-Persians, Bengali Muslims, Habshis, and Arabs, they still employed many non-Muslims in the administration and promoted a form of religious pluralism. It was known as one of the major trading nations of the medieval world, attracting immigrants and traders from different parts of the world. Bengali ships and merchants traded across the region, including in Malacca, China, Africa, Europe and the Maldives through maritime links and overland trade routes. Contemporary European and Chinese visitors described Bengal as the "richest country to trade with" due to the abundance of goods in Bengal. In 1500, the royal capital of Gaur was the fifth-most populous city in the world with 200,000 residents.

Persian was used as a diplomatic and commercial language. Arabic was the liturgical language of the clergy, and the Bengali language became a court language. Bengali was patronised by the Sultans and saved it from being corrupted by the Brahmins wishing to Sanskritise it. Sultan Ghiyathuddin Azam Shah sponsored the construction of madrasas in Makkah and Madinah. The schools became known as the Ghiyasia Banjalia Madrasas. Taqi al-Din al-Fasi, a contemporary Arab scholar, was a teacher at the madrasa in Makkah. The madrasa in Madinah was built at a place called Husn al-Atiq near the Prophet's Mosque. Several other Bengali Sultans also sponsored madrasas in the Hejaz.

The Karrani dynasty was the last ruling dynasty of the sultanate. The Mughals became determined to bring an end to Bengali imperialism. Mughal rule formally began with the Battle of Rajmahal in 1576, when the last Sultan Daud Khan Karrani was defeated by the forces of Emperor Akbar, and the establishment of the Bengal Subah. The eastern deltaic Bhati region remained outside of Mughal control until being absorbed in the early 17th century. The delta was controlled by a confederation of aristocrats of the Sultanate, who became known as the Baro-Bhuiyans. The Mughal government eventually suppressed the remnants of the Sultanate and brought all of Bengal under full Mughal control.

Southern dynasties

The sultans' failure to hold securely the Deccan and South India resulted in the rise of competing for Southern dynasties: the Muslim Bahmani Sultanate (1347–1527) and the Hindu Vijayanagara Empire (1336–1565). Zafar Khan, a former provincial governor under the Tughluqs, revolted against his Turkic overlord and proclaimed himself sultan, taking the title Ala-ud-Din Bahman Shah in 1347. The Bahmani Sultanate, located in the northern Deccan, lasted for almost two centuries, until it fragmented into five smaller states, known as the Deccan sultanates (Bijapur, Golconda, Ahmednagar, Berar, and Bidar) in 1527. The Bahmani Sultanate adopted the patterns established by the Delhi overlords in tax collection and administration, but its downfall was caused in large measure by the competition and hatred between Deccani (domiciled Muslim immigrants and local converts) and paradesi (foreigners or officials in temporary service). The Bahmani Sultanate initiated a process of cultural synthesis visible in Hyderabad where cultural flowering is still expressed in vigorous schools of Deccani architecture and painting.

Founded in 1336, the Vijayanagara Empire (named for its capital Vijayanagara (Vijayanagar), "City of Victory," in present-day Karnataka) expanded rapidly toward Madurai in the south and Goa in the west and exerted intermittent control over the east coast and the extreme southwest. Vijayanagara rulers closely followed Chola precedents, especially in collecting agricultural and trade revenues, in giving encouragement to commercial guilds, and in honoring temples with lavish endowments. Added revenue needed for waging war against the Bahmani sultans was raised by introducing a set of taxes on commercial enterprises, professions, and industries. Political rivalry between the Bahmani and the Vijayanagara rulers involved control over the Krishna-Tungabhadra river basin, which shifted hands depending on whose military was superior at any given time. The Vijayanagar rulers' capacity for gaining victory over their enemies was contingent on ensuring a constant supply of horses—initially through Arab traders but later through the Portuguese—and maintaining internal roads and communication networks. Merchant guilds enjoyed a wide sphere of operation and were able to offset the power of landlords and Brahmans in court politics. Commerce and shipping eventually passed largely into the hands of foreigners, and special facilities and tax concessions were provided for them by the ruler.

The city of Vijayanagara itself contained numerous temples with rich ornamentation, especially the gateways, and a cluster of shrines for the deities. Most prominent among the temples was the one dedicated to Virupaksha, a manifestation of Shiva, the patron-deity of the Vijayanagar rulers. Temples continued to be the nuclei of diverse cultural and intellectual activities, but these activities were based more on tradition than on contemporary political realities. When the rulers of the five Deccan sultanates combined their forces and attacked Vijayanagara in 1565, the empire crumbled at the Battle of Talikot. Most Muslim rulers of south India were Shia muslims.

Mughal era

The Mughal Empire ruled most of the Indian subcontinent between 1526 and 1707. The empire was founded by the Turco-Mongol leader Babur in 1526, when he defeated Ibrahim Lodi, the last Pashtun ruler of the Delhi Sultanate at the First Battle of Panipat. The word "Mughal" is the Persian version of Mongol. Babur, Humayun, Akbar, Jahangir, Shah Jahan, Aurangzeb were prominent rulers of empire.

Hyderabad Nizam

Nizam, a shortened version of Nizam-ul-Mulk, meaning Administrator of the Realm, was the title of the native sovereigns of Hyderabad state, India, since 1719, belonging to the Asaf Jah dynasty. The dynasty was founded by Mir Qamar-ud-Din Siddiqi, a viceroy of the Deccan under the Mughal emperors from 1713 to 1721 who intermittently ruled under the title Asaf Jah in 1924. After Aurangzeb's death in 1707, the Mughal Empire crumbled, and the viceroy in Hyderabad, the young Asaf Jah, declared himself independent.

Other Islamic rulers

Nawab of Awadh ruled parts of current day Uttar Pradesh. Hyder Ali and Tipu Sultan briefly held power in Mysore kingdom. Many princely states other than Hyderabad had Muslim rulers.

History of Sena dynasty

The Sena Empire was a Hindu dynasty during the Late Classical period on the Indian subcontinent, that ruled from Bengal through the 11th and 12th centuries. The empire at its peak covered much of the north-eastern region of the Indian subcontinent. The rulers of the Sena Dynasty traced their origin to the south Indian region of Karnataka.

The dynasty's founder was Samanta Sena. After him came Hemanta Sena who usurped power and styled himself, king, in 1095 AD. His successor Vijaya Sena (ruled from 1096 AD to 1159 AD) helped lay the foundations of the dynasty, and had an unusually long reign of over 60 years. Ballala Sena conquered Gaur from the Pala, became the ruler of the Bengal Delta, and made Nabadwip the capital as well. Ballala Sena married Ramadevi a princess of the Western Chalukya Empire which indicates that the Sena rulers maintained close social contact with south India. Lakshmana Sena succeeded Ballala Sena in 1179, ruled Bengal for approximately 20 years, and expanded the Sena Empire to Odisha, Bihar and probably to Varanasi. In 1203–1204 AD, the Turkic general Bakhtiyar Khalji attacked Nabadwip. Khalji defeated Lakshman Sen and captured northwest Bengal – although Eastern Bengal remained under Sena control.

Origins
The political space after the decline of the Pala power in Bengal was occupied by the Senas whose king Vijayasena succeeded in conquering a large part of Pala territory. The Senas were the supporters of orthodox Hinduism. The dynasty traces its origin to the South, to the Western Chalukya Empire of southern India. There is a record of a Western Chalukya invasion during the reign of Someshvara I led by his son Vikramaditya VI who defeated the kings of Gauda and Kamarupa. This invasion of the Kannada ruler brought bodies of his countrymen from Karnataka into Bengal which explains the origin of the Sena Dynasty.

The founder of the Sena rule was Samantasena who described himself as a Brahmin-Kshatriya of Karnataka (Karnataka). He himself stated that he fought the outlaws of Karnataka and later turned an ascetic. The inscriptions of the Sena kings mention them as Brahma-Kshatriyas (Brahmins who ruled as Kshatriyas) or Kshatriyas. Also, sources have identified them with the Vaidya (as well as the Ambashtha caste or sub-caste, considered as a mixed caste, being born of Brahmin father and Vaishya mother,) and they married with and were identified with the Bengali Vaidyas (commonly known as Baidyas in Bengal) in Vaidya Kula-panjikas (family-tree accounts).

Taking advantage of the revolt of Samantachakra in Varendra during the reign of Mahipala II, Vijayasena, founder of the Sena dynasty, gradually consolidated his position in western Bengal and ultimately assumed an independent position during the reign of Madanapala.

The Sena kings claim in their own inscriptions that they are Brahma-Kshatriyas. Their remote ancestor was one Virasena, whose name was supposed to have been mentioned in Puranas. The "Deopara Inscription" of the Senas also traces the Sena ancestry from Virasena. Since there are no authentic records available still, a keen controversy prevails among scholars regarding origin of the Senas.

Like the origin of the Senas, their early history or circumstances, which led them to concentrate in Bengal is also still unknown. It has been presumed by historians that the Senas came to Bengal on the eve of the invading army led by the Chalukya kings Vikramaditya VI and Someswara III. Some scholars have also suggested that when Rajendra Chola's army had invaded Bengal, the Senas had accompanied them. According to some other historians, a few Karnataka officials, who were subordinate to the Pala kings, had established their independent kingdom in the region of Radha, taking advantage of the weakness of the Pala powers. Those Karnataka chiefs might have arrived in Bengal in wake of the Chalukya invasion and had settled into a kingdom of their own. According to historians Samantasena was such a chief who had established his independent kingdom in the Radha region of Bengal.

Samantasena was a scion of the Sena family, who had distinguished himself through various warfares in South India. He had settled in Radha in Bengal, at an old age. He had also laid the foundation of the Sena family in Bengal. His son Hemantasena carved out an important kingdom in Radha, taking advantage of the decline of the Pala Empire. From their base in Radha, the Senas ultimately extended their powers over the whole of Bengal.

Inscriptions
A copperplate was found in the Adilpur or Edilpur pargana of Faridpur District in 1838 A.D. and was acquired by the Asiatic Society of Bengal, but now the copperplate is missing from the collection. An account of the copperplate was published in the Dacca Review and Epigraphic Indica. The copperplate inscription is written in Sanskrit and in Ganda character, and dated 3rd jyaistha of 1136 samval, or 1079 A.D. In the Asiatic Society's proceeding for January 1838, an account of the copperplate states that three villages were given to a Brahman in the third year of Keshava Sena. The grant was given with the landlord rights, which include the power of punishing the Chandrabhandas or Sundarbans, a tribe that lived in the forest. The land was granted in the village of Leliya in the Kumaratalaka mandala, which is situated in shatata-padamavati-visaya. The copperplate of Keshava Sena records that the king Vallala Sena carried away, from the enemies, the goddesses of fortune on palanquins (Shivaka), which elephant tusk staff supported; and also states that Vallala Sena's son, Lakshmana Sena (1179–1205), erected pillars of victory and sacrificial posts at Varanasi, Allahabad, and Adon Coast of the South Sea. The copperplate also describes the villages with smooth fields growing excellent paddy, the dancing and music in ancient Bengal, and ladies adorned with blooming flowers. The Edilpur copperplate of Keshava Sena records that the king made a grant in favour of Nitipathaka Isvaradeva Sarman for the inside of the subha-varsha.

The Deopara Prashasti is a stone inscription eulogising the Sena kings, particularly Vijaya Sena, composed by the court poet Umapati Dhara.

Society
The Sena rulers consolidated the caste system in Bengal.[need quotation to verify] Although Bengal borrowed from the caste system of Mithila, caste was not so strong in Bengal as in Mithila.

Architecture
The Sena dynasty is famous for building Hindu temples and monasteries, which include the renowned Dhakeshwari Temple in what is now Dhaka, Bangladesh.

In Kashmir, the dynasty also likely built a temple knows as Sankara Gaureshwara.

Literature
The Sena rulers were also great patrons of literature. During the Pala dynasty and the Sena dynasty, major growth in Bengali was witnessed. Some Bengali authors believe that Jayadeva, the famous Sanskrit poet and author of Gita Govinda, was one of the Pancharatnas (five gems) in the court of Lakshmana Sena. Dhoyin – himself an eminent court poet of Sena dynasty – mentions nine gems (ratna) in the court of Lakshmana Sena, among whom were:

Govardhana
Sarana
Jayadeva
Umapati
Dhoyi/Dhoyin Kaviraja

Legacy
After the Sena dynasty, the Deva dynasty ruled in eastern Bengal. The Deva dynasty was probably the last independent Hindu dynasty of Bengal.

History of Kamboja Pala dynasty

The Kamboja-Pala dynasty ruled parts of Bengal in the 10th to 11th centuries CE, after invading during the reign of Gopala II, the Palas. The last Kamboja ruler of the Kamboja-Pala Dynasty Dharmapala was defeated by the south Indian Emperor Rajendra Chola I of the Chola dynasty in the 11th century.

Origins
During the last centuries BCE, many clans of the Kambojas entered India in alliance with the Sakas, Pahlavas, Yavanas and spread into Sindhu, Saurashtra, Malwa, Rajasthan, Punjab and Surasena. An offshoot of the Meerut Kambojas moved eastwards and entered the Pala domains and in the 10th century, conquering north-west Bengal. Kamboja tribes were employed by the Palas following Devapala's conquests due to the lack of native cavalry in Bengal

Ancient sources on Kamboja Rule in Bengal
There are several ancient inscriptions which attest Kamboja rule in Bengal and Bihar. The most important sources are:

Dinajpore Pillar Inscription
The Dinajpur Pillar Inscription records to a Kamboja king called the Kambojanvaya Gaudapati (i.e. lord of Gauda).. The Pillar Inscription was originally established in a Siva temple that was built by the king but removed to Bangar, about 40 miles east of Gauda, during the period of Muslim rule. During the 18th century, the Pillar was further moved to Dinajpore by Maharaja Ram Nath and as a result, the inscription came to be known as Dinajpore Pillar Inscription. The Dinajpore Pillar Inscription dates to the second half of the 10th century.

Irda Copper Plate (Tamrapatra)
The Irda Copper plate (Irda Tamarapatra) is another source on the Kamboja-Pala dynasty and was discovered in 1931. It is written in Sanskrit and has 49 lines of text in ancient Bengali script. The Vamsa or the tribal identity of the rulers mentioned in the Irda Copper Plate is specifically stated to be Kamboja-Vamsha-Tilaka (i.e. Ornament of the Kamboja family or Glory of the Kamboja tribe). Like the Dinajpore Pillar Inscriptions, the Irda Copper plate is also thought to belong to the second half of tenth century (Dr N. G. Majumdar, Dr R. C. Majumdar). Hence the academic community believes that the Kambojanvaya Gaudapati of Dinajpore Pillar Inscriptions and the Kambojavamshatilaka Paramasaugata Maharajadhiraja parameshvara paramabhattaraka Rajyapala of Kamboja-Pala dynasty of Irda Copper Plate Inscriptions refers to the same Kamboja family. But whereas the Dinajpur Pillar inscriptions refer just to one Kamboja ruler with the appellation of "Kambojanvaya Gaudapati", the Irda Copper plate, mentions generation after generation of the Kamboja-Pala kings of Bengal i.e. Rajyapala, Narayanapala and Nayapala etc. The Kamboja-Pala kings of the Irda Copper plate had ruled north-west Bengal in the tenth or eleventh century.

Bangar Grant of Mahipala I
Bangar Charter of Mahipala I is the third very important ancient source of Kamboja rule in Bengal. The charter asserts that Mahipala had re-conquered nearly the whole of north and east Bengal "after defeating the usurpers who had seized his ancestral kingdom". The same verse has been repeated in the Aamgaachhi Charter of Vigrahapala-3. But "Who were the usurpers the inscription does not tell, but other evidences indicate that the rulers belonging to the Kamboja family were in possession of the north and west Bengal". Scholars believe that Mahipala's Charter alludes to the seizing of the northern parts of Bengal by Kamboja dynasty from the Gopala II or Vigrahapala II of the Pala dynasty, which the great king Mahipala I claims to have won back by the force of his arms

Extent of Kamboja Empire
No definite information is available on the precise geographical area of the Kamboja-Pala kingdom of Bengal. According to Irda Copper plate evidence, the Kamboja-Pala kingdom definitely comprised Varadhmana-Bhukti Mandala (modern Burdman division) and Dandabhukti Mandala within the Kamboja empire. The Dandabhukti division is believed to have comprised southern and south-western parts of district Midnapore as well as the lower parts of river Suvaranrekha in district Balasore. Evidence from Dinajpore Pillar Inscription attests that the Gauda country also formed parts of Kamboja-Pala kingdom. But as long as we do not include northern Ladha (Radha or W. Bengal) in Kamboja-Pala empire, the region does not constitute one viable political entity. Hence it appears likely that northern parts of Radha may also formed parts of Kamboja-Pala kingdom. Dr R. C. Majumdar says that Gauda and Radha both formed parts of Kamboja-Pala empire During second half of the 10th century, the Chandela ruler Yashovarman invaded the Pala kingdom. Vakpati, a courtier-poet, claims that he conquered Gauda and Mithila. It is also stated that Chandela chief Dhanga of Jejabhukti, the successor of Yashovarman, had invaded Radha towards the end of the 10th century. As a consequence, the Kamboja power in the north Bengal received a severe jolt. This political scenario enabled the Pala king Mahipala I to re-conquer Gauda from the Kambojas. The last king of the Kambojas was Dharamapala who continued to rule Dandabhukti in the first quarter of the 11th century. The Kamboja ruler Dharamapala of Dandabhukti was defeated by the south Indian Emperor Rajendra Chola I who invaded Bengal and Bihar in the 11th century. The Capital of the Kamboja Pala kingdom is stated to be Pryangu which has not been identified yet, though some scholars tend to identify the same with an old village known as Pingvani located in Garvet Thana.

Known Kamboja kings of Bengal
We know the names of three Kamboja rulers of the Kamboja Pala family for sure viz. Rajyapala, Narayanapala and Nayapala. The Charter (Copper Plate Inscription) was issued by Kamboja king Nayapala wherein he and his father are given the imperial titles like Parameshevara, Paramabhattacharya and Maharajadhiraja. The Copper Plate Inscription also attests that the founder of the Kamboja Pala dynasty was king Rajyapala. He has been referred to as Kambojavamshatilaka Paramasaugata Maharajadhiraja parameshvara paramabhattAraka-Rajyapala. This proves that this line of kings belonged to the Kamboja lineage. The second king is Narayanapala who was son of Rajayapala. Narayanapala was succeeded by his younger brother Nayapala, the author of the Irda Copper plate. Dr R. C. Majumdar states that the expression Kunjarghatavarshan of the Dinajpore Pillar Inscription indicates that Kunjarghatavarshan was personal name of Kambojanvaya Gaudapati of the Dinajpore Pillar Inscription. If this is so, then this Kambojanvaya Gaudapati is the fourth known Kamboja king of Kamboja dynasty of Bengal. Some scholars however believe that the Kambojanvaya Gaudapati of the Dinajpore Pillar Inscriptions is same as Kambojavamshatilaka Rajyapala of the Irda Copper plate. This does not seem to be true since Rajyapala of the Irda Copper plate is described as devotee of Buddha (Parama-saugata) whereas Kambojanvaya Gaudapati of Dinajpore Pillar Inscriptions claims in his own inscription to be a Siva devotee. It may however be possible that Kambojanvaya Gaudapati is same as Kamboja king Nayapala of the Irda Copper plate since king Nayapala also claims to be a Saivite (Siva devotee) in the Irda Copper plate. The last known ruler of the Kamboja Pala dynasty is stated to be king Dharamapala who ruled in Dandabhukti in first quarter of the 11th century.

Religion of Kamboja rulers of Bengal
The Kambojanvaya Gaudapati of Dinajpore Pillar Inscriptions is stated to be a builder of Siva temple and therefore was devotee of Siva. He is said to be a great bestower of the charities. Kambojavamsatilaka Rajayapala, the first king of the Irda Copper plate is referred to as Parama-saugata (devotee of Buddha). The third ruler Narayanapala Kamboja is stated to be a devotee of god Vishnu. King Nayapala Kamboja, the author of Irda Copper plate is known to have practised Siva cult. There is no information on the Kamboja ruler Dharamapala, but it appears likely that he may have also been a Vedic follower i.e. either Saivite or a Vishnu devotee. The Irda Copper plate has references to Hindu gods, high rising temple buildings as well as to the sacred smokes rising from the Yagya fires into the skies. This again alludes to the Hinduism of the Pala Kambojas. Irda Copper plate also makes special references to the Purohits, Kritivajyas, Dharmagyas and other holy officials. Thus we find that the Kamboja kings of Bengal were mostly Vedic Hindus, of course, with the exception of king Rajyapala. Mention is made of grants of lands and villages to the Purohits in the Burdwan district of east Bengal. According to Prof R. C. Majumdar: "More significant, however, is the inclusion of Purohits in the land grants of the Kamboja, Varman and Sena kings of Bengal. It indicates the great importance was attached to religious and social aspects of administration during rules of these dynasties which were all followers of orthodox Hinduism." Dr B. N. Sen says that the Buddhism which had followers in the early Pala and Candra rulers was probably on the decline in Bengal during the 10th century. On the other hand, the Vedic religion was on the rise. Since the Kamboja Pala kings of Bengal were mostly Vedic Hindus, hence they must have got full support from their subject which must have helped them raise a powerful empire in Bengal.

Kambojas in caste system of Bengal
In the ancient caste classification in Bengal, there are references to people who came as invaders from northwest or accompanied the invaders. These people have been described as Mlechchas in the brahmanical Caste System in Bengal. Ancient Sanskrit and Pali texts and inscriptions profusely attest the Kambojas as a Mlechcha tribe of Uttarapatha or Udichya division belonging to Indo-Iranian or Scytho-Aryan and not to the Mongolian stock. The north-westerners including the Kambojas, Sakas, Hunas, Yavanas, Abhiras, Khasas, Sabaras, Turushkas, Suhmas etc. have all been labelled as outsiders, foreigners or Mlechchas within the Bengali society and therefore were left outside the Caste Classification of ancient Bengal.  Compare also: Part-II: VI. Ancient peoples of Bengal: .

Evidence on later Kamboja rulers in Bengal
There is a literary evidence which attests one Kamboja king known as Jagan Nath ruling in Bengal as late as the 16th century. King Jagan Nath is stated to have patronised a Brahmana scholar Sura Mishra who had composed Jagannathaprakasa, a Smriti Granth in honour of this Kamboja king:

Adesh.Kambojakula.vatansah Shri Jagana Natha iti parsidhah
Akaryad dharmanibandhmaytam dhradhipaiapayairkablai nreshe

This shows that the Kamboja rule in some parts of Bengal must have continued, as late as the 16th century.

Pala Empire

The Pala Empire was an imperial power during the Late Classical period on the Indian subcontinent, which originated in the region of Bengal. It is named after its ruling dynasty, whose rulers bore names ending with the suffix of Pala ("protector" in Sanskrit). They were followers of the Mahayana and Tantric schools of Buddhism. The empire was founded with the election of Gopala as the emperor of Gauda in 750 CE. The Pala stronghold was located in Bengal and Bihar, which included the major cities of Vikrampura, Pataliputra, Gauda, Monghyr, Somapura, Ramvati (Varendra), Tamralipta and Jaggadala.

The Palas were astute diplomats and military conquerors. Their army was noted for its vast war elephant corps. Their navy performed both mercantile and defensive roles in the Bay of Bengal. The Palas were important promoters of classical Indian philosophy, literature, painting, and sculpture. They built grand temples and monasteries, including the Somapura Mahavihara, and patronised the great universities of Nalanda and Vikramashila. The Proto-Bengali language developed under Pala rule. The empire enjoyed relations with the Srivijaya Empire, the Tibetan Empire and the Arab Abbasid Caliphate. Abbasid coinage found in Pala archaeological sites, as well as records of Arab historians, point to flourishing mercantile and intellectual contacts. The House of Wisdom in Baghdad absorbed the mathematical and astronomical achievements of Indian civilisation during this period.

At its height in the early 9th century, the Pala Empire was the dominant power in the northern Indian subcontinent, with its territory stretching across parts of modern-day eastern Pakistan, northern and northeastern India, Nepal and Bangladesh. The empire reached its peak under Emperors Dharmapala and Devapala. The Palas also exerted a strong cultural influence under Atisa in Tibet, as well as in Southeast Asia. Pala control of North India was ultimately ephemeral, as they struggled with the Gurjara-Pratiharas and the Rashtrakutas for the control of Kannauj and were defeated. After a short lived decline, Emperor Mahipala I defended imperial bastions in Bengal and Bihar against South Indian Chola invasions. Emperor Ramapala was the last strong Pala ruler, who gained control of Kamarupa and Kalinga. The empire was considerably weakened by the 11th century, with many areas engulfed in rebellion.

The resurgent Hindu Sena dynasty dethroned the Pala Empire in the 12th century, ending the reign of the last major Buddhist imperial power in the Indian subcontinent. The Pala period is considered one of the golden eras of Bengali history. The Palas brought stability and prosperity to Bengal after centuries of civil war between warring divisions. They advanced the achievements of previous Bengali civilisations and created outstanding works of arts and architecture. They laid the basis for the Bengali language, including its first literary work, the Charyapada. The Pala legacy is still reflected in Tibetan Buddhism.

History

Origins
According to the Khalimpur copper plate inscription, the first Pala king Gopala was the son of a warrior named Vapyata. The Ramacharitam attests that Varendra (North Bengal) was the fatherland (Janakabhu) of the Palas. The ethnic origins of the dynasty are unknown, although the later records claim that Gopala was a Kshatriya belonging to the legendary Solar dynasty. The Ballala-Carita states that the Palas were Kshatriyas, a claim reiterated by Taranatha in his History of Buddhism in India as well as Ghanaram Chakrabarty in his Dharmamangala (both written in the 16th century CE). The Ramacharitam also attests the fifteenth Pala emperor, Ramapala, as a Kshatriya. Claims of belonging to the legendary Solar dynasty are unreliable and clearly appear to be an attempt to cover up the humble origins of the dynasty. The Pala dynasty has also been branded as Śudra in some sources such as Manjushri-Mulakalpa; this might be because of their Buddhist leanings. According to Abu'l-Fazl ibn Mubarak (in Ain-i-Akbari), the Palas were Kayasthas. There are even accounts that claim Gopala may have been from a Brahmin lineage.

Establishment
After the fall of Shashanka's kingdom, the Bengal region was in a state of anarchy. There was no central authority, and there was constant struggle between petty chieftains. The contemporary writings describe this situation as matsya nyaya ("fish justice" i.e. a situation where the big fish eat the small fish). Gopala ascended the throne as the first Pala king during these times. The Khalimpur copper plate suggests that the prakriti (people) of the region made him the king. Taranatha, writing nearly 800 years later, also writes that he was democratically elected by the people of Bengal. However, his account is in form of a legend, and is considered historically unreliable. The legend mentions that after a period of anarchy, the people elected several kings in succession, all of whom were consumed by the Naga queen of an earlier king on the night following their election. Gopal, however managed to kill the queen and remained on the throne. The historical evidence indicates that Gopala was not elected directly by his citizens, but by a group of feudal chieftains. Such elections were quite common in contemporary societies of the region.

Gopala's ascension was a significant political event as the several independent chiefs recognised his political authority without any struggle.

Expansion under Dharmapala and Devapala
Gopala's empire was greatly expanded by his son Dharmapala and his grandson Devapala. Dharmapala was initially defeated by the Pratihara ruler Vatsaraja. Later, the Rashtrakuta king Dhruva defeated both Dharmapala and Vatsaraja. After Dhruva left for the Deccan region, Dharmapala built a mighty empire in the northern India. He defeated Indrayudha of Kannauj, and installed his own nominee Chakrayudha on the throne of Kannauj. Several other smaller states in North India also acknowledged his suzerainty. Soon, his expansion was checked by Vatsaraja's son Nagabhata II, who conquered Kannauj and drove away Chakrayudha. Nagabhata II then advanced up to Munger and defeated Dharmapala in a pitched battle. Dharmapala was forced to surrender and to seek alliance with the Rashtrakuta emperor Govinda III, who then intervened by invading northern India and defeating Nagabhata II. The Rashtrakuta records show that both Chakrayudha and Dharmapala recognised the Rashtrakuta suzerainty. In practice, Dharmapala gained control over North India after Govinda III left for the Deccan. He adopted the title Paramesvara Paramabhattaraka Maharajadhiraja.

Dharmapala was succeeded by his son Devapala, who is regarded as the most powerful Pala ruler. His expeditions resulted in the invasion of Pragjyotisha (present-day Assam) where the king submitted without giving a fight and the Utkala (present-day Orissa) whose king fled from his capital city. The inscriptions of his successors also claim several other territorial conquests by him, but these are highly exaggerated (see the Geography section below).

First period of decline
Following the death of Devapala, the Pala empire gradually started disintegrating. Vigrahapala, who was Devapala's nephew, abdicated the throne after a brief rule, and became an ascetic. Vigrahapala's son and successor Narayanapala proved to be a weak ruler. During his reign, the Rashtrakuta king Amoghavarsha defeated the Palas. Encouraged by the Pala decline, the King Harjara of Assam assumed imperial titles and the Sailodbhavas established their power in Orissa.

Naryanapala's son Rajyapala ruled for at least 12 years, and constructed several public utilities and lofty temples. His son Gopala II lost Bengal after a few years of rule, and then ruled only Bihar. The next king, Vigrahapala II, had to bear the invasions from the Chandelas and the Kalachuris. During his reign, the Pala empire disintegrated into smaller kingdoms like Gauda, Radha, Anga and Vanga. Kantideva of Harikela (eastern and southern Bengal) also assumed the title Maharajadhiraja, and established a separate kingdom, later ruled by the Chandra dynasty. The Gauda state (West and North Bengal) was ruled by the Kamboja Pala dynasty. The rulers of this dynasty also bore names ending in the suffix -pala (e.g. Rajyapala, Narayanapala and Nayapala). However, their origin is uncertain, and the most plausible view is that they originated from a Pala official who usurped a major part of the Pala kingdom along with its capital.

Revival under Mahipala I
Mahipala I recovered northern and eastern Bengal within three years of ascending the throne in 988 CE. He also recovered the northern part of the present-day Burdwan division. During his reign, Rajendra Chola I of the Chola Empire frequently invaded Bengal from 1021 to 1023 CE to get Ganges water and in the process, succeeded to humble the rulers, acquiring considerable booty. The rulers of Bengal who were defeated by Rajendra Chola were Dharmapal, Ranasur and Govindachandra, who might have been feudatories under Mahipala I of the Pala Dynasty. Rajendra Chola I also defeated Mahipala, and obtained from the Pala king "elephants of rare strength, women and treasure". Mahipala also gained control of north and south Bihar, probably aided by the invasions of Mahmud of Ghazni, which exhausted the strength of other rulers of North India. He may have also conquered Varanasi and surrounding area, as his brothers Sthirapala and Vasantapala undertook construction and repairs of several sacred structures at Varanasi. Later, the Kalachuri king Gangeyadeva annexed Varanasi after defeating the ruler of Anga, which could have been Mahipala I.

Second period of decline
Nayapala, the son of Mahipala I, defeated the Kalachuri king Karna (son of Ganggeyadeva) after a long struggle. The two later signed a peace treaty at the mediation of the Buddhist scholar Atiśa. During the reign of Nayapala's son Vigrahapala III, Karna once again invaded Bengal but was defeated. The conflict ended with a peace treaty, and Vigrahapala III married Karna's daughter Yauvanasri. Vigrahapala III was later defeated by the invading Chalukya king Vikramaditya VI. The invasion of Vikramaditya VI saw several soldiers from South India into Bengal, which explains the southern origin of the Sena Dynasty. Vigrahapala III also faced another invasion led by the Somavamsi king Mahasivagupta Yayati of Orissa. Subsequently, a series of invasions considerably reduced the power of the Palas. The Varmans occupied eastern Bengal during his reign.

Mahipala II, the successor of Vigrahapala III, brought a short-lived reign of military glory. His reign is well-documented by Sandhyakar Nandi in Ramacharitam. Mahipala II imprisoned his brothers Ramapala and Surapala II, on the suspicion that they were conspiring against him. Soon afterwards, he faced a rebellion of vassal chiefs from the Kaibarta (fishermen). A chief named Divya (or Divvoka) killed him and occupied the Varendra region. The region remained under the control of his successors Rudak and Bhima. Surapala II escaped to Magadha and died after a short reign. He was succeeded by his brother Ramapala, who launched a major offensive against Divya's grandson Bhima. He was supported by his maternal uncle Mathana of the Rashtrakuta dynasty, as well as several feudatory chiefs of south Bihar and south-west Bengal. Ramapala conclusively defeated Bhima, and killing him and his family in a cruel manner.

Revival under Ramapala
After gaining control of Varendra, Ramapala tried to revive the Pala empire with limited success. He ruled from a new capital at Ramavati, which remained the Pala capital until the dynasty's end. He reduced taxation, promoted cultivation and constructed public utilities. He brought Kamarupa and Rar under his control, and forced the Varman king of east Bengal to accept his suzerainty. He also struggled with the Ganga king for control of present-day Orissa; the Gangas managed to annexe the region only after his death. Ramapala maintained friendly relations with the Chola king Kulottunga to secure support against the common enemies: the Ganas and the Chalukyas. He kept the Senas in check, but lost Mithila to a Karnataka chief named Nanyuadeva. He also held back the aggressive design of the Gahadavala ruler Govindacharndra through a matrimonial alliance.

Final decline
Ramapala was the last strong Pala ruler. After his death, a rebellion broke out in Kamarupa during his son Kumarapala's reign. The rebellion was crushed by Vaidyadeva, but after Kumarapala's death, Vaidyadeva practically created a separate kingdom. According to Ramacharitam, Kumarapala's son Gopala III was murdered by his uncle Madanapala. During Madanapala's rule, the Varmans in east Bengal declared independence, and the Eastern Gangas renewed the conflict in Orissa. Madanapala captured Munger from the Gahadavalas, but was defeated by Vijayasena, who gained control of southern and eastern Bengal. A ruler named Govindapala ruled over the Gaya district around 1162 CE, but there is no concrete evidence about his relationship to the imperial Palas. The Pala dynasty was replaced by the Sena dynasty.

Geography
The borders of the Pala Empire kept fluctuating throughout its existence. Though the Palas conquered a vast region in North India at one time, they could not retain it for long due to constant hostility from the Gurjara-Pratiharas, the Rashtrakutas and other less powerful kings.

No records are available about the exact boundaries of original kingdom established by Gopala, but it might have included almost all of the Bengal region. The Pala empire extended substantially under Dharmapala's rule. Apart from Bengal, he directly ruled the present-day Bihar. The kingdom of Kannauj (present-day Uttar Pradesh) was a Pala dependency at times, ruled by his nominee Chakrayudha. While installing his nominee on the Kannauj throne, Dharmapala organised an imperial court. According to the Khalimpur copper plate issued by Dharmapala, this court was attended by the rulers of Bhoja (possibly Vidarbha), Matsya (Jaipur region), Madra (East Punjab), Kuru (Delhi region), Yadu (possibly Mathura, Dwarka or Simhapura in the Punjab), Yavana, Avanti, Gandhara and Kira (Kangra Valley). These kings accepted the installation of Chakrayudha on the Kannauj throne, while "bowing down respectfully with their diadems trembling". This indicates that his position as a sovereign was accepted by most rulers, although this was a loose arrangement unlike the empire of the Mauryas or the Guptas. The other rulers acknowledged the military and political supremacy of Dharmapala, but maintained their own territories. The poet Soddhala of Gujarat calls Dharmapala an Uttarapathasvamin ("Lord of the North") for his suzerainty over North India.

The epigraphic records credit Devapala with extensive conquests in hyperbolic language. The Badal pillar inscription of his successor Narayana Pala states that by the wise counsel and policy of his Brahmin minister Darbhapani, Devapala became the suzerain monarch or Chakravarti of the whole tract of Northern India bounded by the Vindhyas and the Himalayas. It also states that his empire extended up to the two oceans (presumably the Arabian Sea and the Bay of Bengal). It also claims that Devpala defeated Utkala (present-day Orissa), the Hunas, the Kambojas, the Dravidas, the Kamarupa (present-day Assam), and the Gurjaras:

The Gurjara adversary may have been Mihira Bhoja, whose eastward expansion was checked by Devapala
The identity of the Huna king is uncertain.
The identity of the Kamboja prince is also uncertain. While an ancient country with the name Kamboja was located in what is now Afghanistan, there is no evidence that Devapala's empire extended that far. Kamboja, in this inscription, could refer to the Kamboja tribe that had entered North India (see Kamboja Pala dynasty).
The Dravida king is usually identified with the Rashtrakuta king Amoghavarsha. Some scholars believe that the Dravida king could have been the Pandya ruler Shri Mara Shri Vallabha, since "Dravida" usually refers to the territory south of the Krishna river. According to this theory, Devapala could have been helped in his southern expedition by the Chandela king Vijaya. In any case, Devapala's gains in the south, if any, were temporary.

The claims about Devapala's victories are exaggerated, but cannot be dismissed entirely: there is no reason to doubt his conquest of Utkala and Kamarupa. Besides, the neighbouring kingdoms of Rashtrakutas and the Gurjara-Pratiharas were weak at the time, which might have helped him extend his empire. Devapala is also believed to have led an army up to the Indus river in Punjab.

The empire started disintegrated after the death of Devapala, and his successor Narayanapala lost control of Assam and Orissa. He also briefly lost control over Magadha and north Bengal. Gopala II lost control of Bengal, and ruled only from a part of Bihar. The Pala empire disintegrated into smaller kingdoms during the reign of Vigrahapala II. Mahipala recovered parts of Bengal and Bihar. His successors lost Bengal again. The last strong Pala ruler, Ramapala, gained control of Bengal, Bihar, Assam and parts of Orissa. By the time of Madanapala's death, the Pala kingdom was confined to parts of central and east Bihar along with northern Bengal.

Administration
The Pala rule was monarchial. The king was the centre of all power. Pala kings would adopt imperial titles like Parameshwara, Paramvattaraka, Maharajadhiraja. Pala kings appointed Prime Ministers. The Line of Garga served as the Prime Ministers of the Palas for 100 years.

Garga
Darvapani (or Darbhapani)
Someshwar
Kedarmisra
Bhatta Guravmisra

Pala Empire was divided into separate Bhuktis (Provinces). Bhuktis were divided into Vishayas (Divisions) and Mandalas (Districts). Smaller units were Khandala, Bhaga, Avritti, Chaturaka, and Pattaka. Administration covered widespread area from the grass root level to the imperial court.

The Pala copperplates mention following administrative posts:

Raja
Rajanyaka
Ranaka (possibly subordinate chiefs)
Samanta and Mahasamanta (Vassal kings)
Mahasandhi-vigrahika (Foreign minister)
Duta (Head Ambassador)
Rajasthaniya (Deputy)
Aggaraksa (Chief guard)
Sasthadhikrta (Tax collector)
Chauroddharanika (Police tax)
Shaulkaka (Trade tax)
Dashaparadhika (Collector of penalties)
Tarika (Toll collector for river crossings)
Mahaksapatalika (Accountant)
Jyesthakayastha (Dealing documents)
Ksetrapa (Head of land use division) and Pramatr (Head of land measurements)
Mahadandanayaka or Dharmadhikara (Chief justice)
Mahapratihara
Dandika
Dandapashika
Dandashakti (Police forces)
Khola (Secret service).
Agricultural posts like Gavadhakshya (Head of dairy farms)
Chhagadhyakshya (Head of goat farms)
Meshadyakshya (Head of sheep farms)
Mahishadyakshya (Head of Buffalo farms) and many other like Vogpati
Vishayapati
Shashtadhikruta
Dauhshashadhanika
Nakadhyakshya

Culture

Religion
The Palas were patrons of Mahayana Buddhism. A few sources written much after Gopala's death mention him as a Buddhist, but it is not known if this is true. The subsequent Pala kings were definitely Buddhists. Taranatha states that Gopala was a staunch Buddhist, who had built the famous monastery at Odantapuri.[failed verification] Dharmapala made the Buddhist philosopher Haribhadra his spiritual preceptor. He established the Vikramashila monastery and the Somapura Mahavihara. Taranatha also credits him with establishing 50 religious institutions and patronising the Buddhist author Hariibhadra. Devapala restored and enlarged the structures at Somapura Mahavihara, which also features several themes from the epics Ramayana and Mahabharata. Mahipala I also ordered construction and repairs of several sacred structures at Saranath, Nalanda and Bodh Gaya. The Mahipala geet ("songs of Mahipala"), a set of folk songs about him, are still popular in the rural areas of Bengal.

The Palas developed the Buddhist centres of learnings, such as the Vikramashila and the Nalanda universities. Nalanda, considered one of the first great universities in recorded history, reached its height under the patronage of the Palas. Noted Buddhist scholars from the Pala period include Atisha, Santaraksita, Saraha, Tilopa, Bimalamitra, Dansheel, Dansree, Jinamitra, Jnanasrimitra, Manjughosh, Muktimitra, Padmanava, Sambhogabajra, Shantarakshit, Silabhadra, Sugatasree and Virachan.

As the rulers of Gautama Buddha's land, the Palas acquired great reputation in the Buddhist world. Balaputradeva, the Sailendra king of Java, sent an ambassador to him, asking for a grant of five villages for the construction of a monastery at Nalanda. The request was granted by Devapala. He appointed the Brahmin Viradeva (of Nagarahara, present-day Jalalabad) as the head of the Nalanda monastery. The Buddhist poet Vajradatta (the author of Lokesvarashataka), was in his court. The Buddhist scholars from the Pala empire travelled from Bengal to other regions to propagate Buddhism. Atisha, for example, preached in Tibet and Sumatra, and is seen as one of the major figures in the spread of 11th-century Mahayana Buddhism.

The Palas also supported the Saiva ascetics, typically the ones associated with the Golagi-Math. Narayana Pala himself established a temple of Shiva, and was present at the place of sacrifice by his Brahmin minister. Queen of King Madanapaladeva, namely Chitramatika, made a gift of land to a Brahmin named Bateswara Swami as his remuneration for chanting the Mahabharata at her request, according to the principle of the Bhumichhidranyaya. Besides the images of the Buddhist deities, the images of Vishnu, Siva and Sarasvati were also constructed during the Pala dynasty rule.

Literature
The Palas patronised several Sanskrit scholars, some of whom were their officials. The Gauda riti style of composition was developed during the Pala rule. Many Buddhist Tantric works were authored and translated during the Pala rule. Besides the Buddhist scholars mentioned in the Religion section above, Jimutavahana, Sandhyakar Nandi, Madhava-kara, Suresvara and Chakrapani Datta are some of the other notable scholars from the Pala period.

The notable Pala texts on philosophy include Agama Shastra by Gaudapada, Nyaya Kundali by Sridhar Bhatta and Karmanushthan Paddhati by Bhatta Bhavadeva. The texts on medicine include

Chikitsa Samgraha, Ayurveda Dipika, Bhanumati, Shabda Chandrika and Dravya Gunasangraha by Chakrapani Datta
Shabda-Pradipa, Vrikkhayurveda and Lohpaddhati by Sureshwara
Chikitsa Sarsamgraha by Vangasena
Sushrata by Gadadhara Vaidya
Dayabhaga, Vyavohara Matrika and Kalaviveka by Jimutavahana

Sandhyakar Nandi's semi-fictional epic Ramacharitam (12th century) is an important source of Pala history.

A form of the proto-Bengali language can be seen in the Charyapadas composed during the Pala rule.

Art and architecture
The Pala school of sculptural art is recognised as a distinct phase of the Indian art, and is noted for the artistic genius of the Bengal sculptors. It is influenced by the Gupta art.

The Pala style was inherited and continued to develop under the Sena Empire. During this time, the style of sculpture changed from "Post-Gupta" to a distinctive style that was widely influential in other areas and later centuries. Deity figures became more rigid in posture, very often standing with straight legs close together, and figures were often heavily loaded with jewellery; they very often have multiple arms, a convention allowing them to hold many attributes and display mudras. The typical form for temple images is a slab with a main figure, rather over half life-size, in very high relief, surrounded by smaller attendant figures, who might have freer tribhanga poses. Critics have found the style tending towards over-elaboration. The quality of the carving is generally very high, with crisp, precise detail. In east India, facial features tend to become sharp.

Much larger numbers of smaller bronze groups of similar composition have survived than from previous periods. Probably the numbers produced were increasing. These were mostly made for domestic shrines of the well-off, and from monasteries. Gradually, Hindu figures come to outnumber Buddhist ones, reflecting the terminal decline of Indian Buddhism, even in east India, its last stronghold.

As noted earlier, the Palas built a number of monasteries and other sacred structures. The Somapura Mahavihara in present-day Bangladesh is a World Heritage Site. It is a monastery with 21 acre (85,000 m²) complex has 177 cells, numerous stupas, temples and a number of other ancillary buildings. The gigantic structures of other Viharas, including Vikramashila, Odantapuri, and Jagaddala are the other masterpieces of the Palas. These mammoth structures were mistaken by the forces of Bakhtiyar Khalji as fortified castles and were demolished. The art of Bihar and Bengal during the Pala and Sena dynasties influenced the art of Nepal, Burma, Sri Lanka and Java.

List of Pala rulers
Most of the Pala inscriptions mention only the regnal year as the date of issue, without any well-known calendar era. Because of this, the chronology of the Pala kings is hard to determine. Based on their different interpretations of the various epigraphs and historical records, different historians estimate the Pala chronology as follows:

	RC Majumdar (1971)	AM Chowdhury (1967)	BP Sinha (1977)	DC Sircar (1975–76)	D. K. Ganguly (1994)
Gopala I	750–770	756–781	755–783	750–775	750–774
Dharmapala	770–810	781–821	783–820	775–812	774–806
Devapala	810–c. 850	821–861	820–860	812–850	806–845
Mahendrapala	NA (Mahendrapala's existence was conclusively established through a copper-plate charter discovered later.)				845–860
Shurapala I	850–853	861–866	860–865	850–858	860–872
Vigrahapala I				858–60	872–873
Narayanapala	854–908	866–920	865–920	860–917	873–927
Rajyapala	908–940	920–952	920–952	917–952	927–959
Gopala II	940–957	952–969	952–967	952–972	959–976
Vigrahapala II	960–c. 986	969–995	967–980	972–977	976–977
Mahipala I	988–c. 1036	995–1043	980–1035	977–1027	977–1027
Nayapala	1038–1053	1043–1058	1035–1050	1027–1043	1027–1043
Vigrahapala III	1054–1072	1058–1075	1050–1076	1043–1070	1043–1070
Mahipala II	1072–1075	1075–1080	1076–1078/9	1070–1071	1070–1071
Shurapala	1075–1077	1080–1082		1071–1072	1071–1072
Ramapala	1077–1130	1082–1124	1078/9–1132	1072–1126	1072–1126
Kumarapala	1130–1125	1124–1129	1132–1136	1126–1128	1126–1128
Gopala III	1140–1144	1129–1143	1136–1144	1128–1143	1128–1143
Madanapala	1144–1162	1143–1162	1144–1161/62	1143–1161	1143–1161
Govindapala	1155–1159	NA	1162–1176 or 1158–1162	1161–1165	1161–1165
Palapala	NA	NA	NA	1165–1199	1165–1200

Note:

Earlier historians believed that Vigrahapala I and Shurapala I were the two names of the same person. Now, it is known that these two were cousins; they either ruled simultaneously (perhaps over different territories) or in rapid succession.
AM Chowdhury rejects Govindapala and his successor Palapala as the members of the imperial Pala dynasty.
According to BP Sinha, the Gaya inscription can be read as either the "14th year of Govindapala's reign" or "14th year after Govindapala's reign". Thus, two sets of dates are possible.

Military
The highest military officer in the Pala empire was the Mahasenapati (commander-in-chief). The Palas recruited mercenary soldiers from a number of kingdoms, including Malava, Khasa, Huna, Kulika, Kanrata, Lata, Odra and Manahali. According to the contemporary accounts, the Rashtrakutas had the best infantry, the Gurjara-Pratiharas had the finest cavalry and the Palas had the largest elephant force. The Arab merchant Sulaiman states that the Palas had an army bigger than those of the Balhara (possibly the Rashtrakutas) and the king of Jurz (possibly the Gurjara-Pratiharas). He also states that the Pala army employed 10,000–15,000 men for fuelling and washing clothes. He further claims that during the battles, the Pala king would lead 50,000 war elephants. Sulaiman's accounts seem to be based on exaggerated reports; Ibn Khaldun mentions the number of elephants as 5,000.

Since Bengal did not have a good native breed of horses, the Palas imported their cavalry horses from the foreigners, including the Kambojas. They also had a navy, used for both mercantile and defence purposes.