Muslim conquests in the Indian subcontinent

• 1. Early Arab Incursions And Frontier Wars

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  In 636 AD, a naval expedition from Bahrain targeted the coastal town of Thane near modern Mumbai. Uthman ibn Abi al-As al-Thaqafi, governor of Bahrain and Oman, launched these raids without Caliph Umar's permission. The first raid was commanded by his brother al-Hakam, who also led an attack on Bharuch in Gujarat. A second raid under al-Mughira struck Debal near Karachi around 643 AD. These early expeditions sought plunder or aimed to protect Arabian trade routes rather than conquer territory. Caliph Umar denied further incursions after the initial successes, fearing retaliation. By 710 AD, Muhammad bin Qasim departed Shiraz with an army of 6,000 Syrian cavalry and 3,000 camels. He conquered Makran and then Debal before advancing up the Indus River. Raja Dahir of Sindh died fighting at the Battle of Aror in 712 AD. Arab rule eventually stretched only as far as the western shore of the Indus. Rebellions in Sistan and Khurasan diverted resources away from India between 653 and 691 AD. The Arabs levied annual tributes but could not establish permanent control beyond Multan and Mansurah by 871 AD.

• 2. Ghaznavid Raids And The Rise Of Sultanates

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  Mahmud of Ghazni ascended the throne in 998 AD and launched seventeen expeditions into northern India. In 1001, he defeated Raja Jayapala of the Hindu Shahi Dynasty at the Battle of Peshawar. His forces reached temples in Varanasi, Mathura, Ujjain, and Somnath during these campaigns. Al Biruni reported on the devastation caused to Gandhara following the defeat of Jayapala. By 1027, Mahmud had captured parts of North India and obtained formal recognition from Caliph al-Qadir Billah. Lahore became his second capital and later his only capital after 1030. Although his raids crossed Northern and Western India, only Punjab came under permanent Ghaznavid rule until 1187. Muhammad of Ghor invaded Prithviraj III's territory in 1191 but lost the First Battle of Tarain. He returned with 120,000 men the next year and won the Second Battle of Tarain. Prithviraj was executed, and Delhi fell under Muslim control within a year. Muhammad of Ghor established Delhi as the capital of his Indian provinces before returning east to face threats from the Khwarizmian Empire. He was assassinated on the 15th of March 1206, while offering evening prayers near Sohawa. Qutb ud-Din Aibak founded the Mamluk dynasty in 1206, marking the beginning of the Delhi Sultanate.

• 3. Timur Invasion And The Fragmentation Era

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  Timur began his campaign against Sultan Nasir-u Din Mehmud of the Tughlaq Dynasty in late 1398. His forces defeated the Sultan's army on the 17th of December 1398, at the gates of Delhi. Before the battle, Timur executed more than 100,000 Hindu captives according to some accounts. The city was sacked and left in ruins after his victory. Ruy Gonzáles de Clavijo recorded that 90 captured elephants were used to carry precious stones looted from India to build the Bibi-Khanym Mosque in Samarkand. Timur departed Delhi in January 1399 and returned to his capital beyond the Oxus River by April. The invasion shattered centralized power and triggered the emergence of independent regional sultanates. These included the Gujarat Sultanate, Malwa Sultanate, Bahmani Sultanate, Jaunpur Sultanate, Madurai Sultanate, and Bengal Sultanate. Some regions experienced Hindu reconquests led by powers like Vijayanagara and Rajput states under Mewar. Civil war erupted in Sindh in 842 AD, leading to five independent principalities outside direct Caliphate control. By 1526, Zahiruddin Babur conquered the last Lodhi Sultan in the First Battle of Panipat, ending the Delhi Sultanate.

• 4. Mughal Imperial Zenith And Religious Policy

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  Babur founded the Mughal Empire in 1526 after defeating Ibrahim Lodi at Panipat. He died shortly thereafter in 1530 but established a dynasty lasting over two centuries. Akbar ruled from 1556 to 1605 and abolished the jizya tax twice while establishing Din E Elahi, a syncretic religion blending various faiths. His administration integrated non-Muslim subjects into bureaucracy and military machinery. Aurangzeb reigned from 1658 to 1707 and enforced orthodox Islamic Sharia through the Fatawa al-Alamgir. His Deccan campaign resulted in an estimated death toll of 4.6 million people, including Muslims and Hindus alike. During the Mughal-Maratha Wars, approximately 2.5 million soldiers were killed annually during a quarter-century conflict. Two million civilians died due to drought, plague, and famine in war-torn lands. Effective Muslim control began weakening immediately after Aurangzeb's death in 1707. Succession became hereditary and subject to intrigue, leading to the zamindari system where officials collected rents as landed aristocracy. The empire reached its territorial zenith under Aurangzeb before sudden decline set in.

• 5. The Maratha Ascendancy And Sikh Resistance

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  The Maratha Confederacy emerged as the dominant power between 1674 and 1818, replacing Mughal authority across large parts of India. Mahadji recaptured Delhi in early 1771 and installed Shah Alam II as puppet ruler on the Mughal throne. Mountstuart Elphinstone described this period as demoralizing for many Muslims who lost the will to fight against the Marathas. At its peak, the empire stretched from Trichinopoly in Tamil Nadu to the Afghan border in the north. Ahmed Shah Abdali defeated the Marathas at the Third Battle of Panipat in 1761 but could not maintain long-term conquest. He became preoccupied with revolts by Sikhs in Punjab. Vadda Ghalughara occurred under Muslim provincial government based at Lahore, killing non-combatant women, children, and old men. Sikhs assembled again after two months and defeated Durrani forces in the Battle of Harnaulgarh. Ranjit Singh unified Sikh misldhars and made Lahore the administrative capital of a new Sikh Empire in 1799. The biggest victory came in the Battle of Attock fought in 1813, where Sikhs routed Afghan forces and killed over 9,000 soldiers. Dost Mohammad was seriously injured while his brother Fateh Khan fled back to Kabul fearing death.

• 6. Scholarly Debates On Conversion And Demographics

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  Historian Will Durant characterized Islamic conquests of India as probably the bloodiest story in history due to extensive violence and destruction. Conversely, Audrey Truschke and Romila Thapar argue such portrayals are exaggerated and overlook complexities of cultural integration. Truschke highlights Mughal emperors' engagement with Sanskrit culture suggesting significant cultural synthesis. Thapar contends that narratives of continuous Hindu persecution are historically untenable noting instances of patronage and coexistence. Richard M. Eaton lists 80 temples desecrated by Muslim conquerors but notes this was not unusual in medieval India where Hindu kings also destroyed rival temples. K.S. Lal claimed between 1000 and 1500 the Indian population decreased by 30 million, though his estimates were tentative and criticized for lack of accurate data. Economic historians Angus Maddison and Jean-Noël Biraben indicate India's population increased by tens of millions during that same period. Conversions occurred for pragmatic reasons including social mobility among ruling elites or relief from taxes like jizya. Some conversions resulted from actions of Sunni Sufi saints involving genuine change of heart while others came from Buddhists rejecting oppressive caste strictures. The legacy remains hotly debated reflecting spectrum of interpretations regarding socio-cultural transformations.