From the Arab conquest of Sindh to Babur's victory at Panipat — the five dynasties, their greatest rulers, and how the Sultanate was administered.
After Harshavardhana's death, North India fragmented into as many as 1,200 small kingdoms — a phase historians call Indian feudalism. Control of Kanauj triggered the Tripartite Struggle among the Palas (Bengal), Pratiharas (Madhya Pradesh) and Rashtrakutas (Maharashtra/Karnataka); all three were weakened, though the Rashtrakutas held out longest. From this churn emerged the Rajputs — per court poet Chand Bardai, born from a sacrificial fire at Mount Abu (the "Agnikula" legend), though British historian Colonel James Tod argued instead for foreign migrant origins. Main clans: Chauhans, Pratiharas, Paramaras, Solankis.
Islam first entered India when the Umayyad Caliph Al-Walid sanctioned a campaign against Sindh, after a gift-ship for the Iraqi governor was plundered at Debal. Muhammad bin Qasim destroyed Multan and killed Raja Dahir at the Battle of Rori. Cultural fallout: Islamic thought absorbed Vedanta/Bhakti/Buddhist/Jain influences (feeding the Sufi movement); Islam's caste/idol challenge spurred the Bhakti movement in turn; Indian works like the Panchatantra and chess were transmitted to the Arab world; and the Jizya tax on non-Muslims was levied in India for the first time.
Mahmud of Ghazni (r. 998–1030) invaded India ~17 times purely to plunder wealth — sacking the Somnath temple (1025, ~20 tonnes of gold) and destroying the Mahakaleshwar temple at Ujjain (1008) after King Vidyadhar's Kalanjar fort held firm. Scholar Al-Biruni accompanied him and spent years studying Sanskrit at Varanasi.
Muhammad Ghori was checked by Prithviraj Chauhan at the First Battle of Tarain (1191), but won the Second Battle of Tarain (1192) — reportedly aided by rival Jaichandra of Kannauj, whom Ghori then defeated at Chandawar (1193). After Ghori's death, his slave-general Qutubuddin Aibak founded the Delhi Sultanate in 1206.
| Dynasty | Period | Ethnicity |
|---|---|---|
| Slave / Mamluk | 1206–1290 | Turkic (10 rulers — the most) |
| Khilji | 1290–1320 | Afghan |
| Tughlaq | 1320–1414 | Turkic |
| Sayyid | 1414–1451 | Persian (claimed) |
| Lodi | 1451–1526 | Afghan (3 rulers — fewest) |
Qutubuddin Aibak — "Lakh Baksh," began the Qutub Minar, never formally recognised as Sultan. Iltutmish, the true founder, perfected the Iqta system, introduced the silver Tanka/copper Jital, founded the Chihalgani (Forty nobles), shifted the capital to Delhi, and faced Genghis Khan's Mongols (1218–27). Raziya Sultana, his daughter, was the only woman ever to rule Delhi. Ghiyasuddin Balban, greatest of the dynasty, introduced the divine-origin theory of kingship ("Zill-i-Ilahi"), abolished the Chihalgani, and created the Diwan-i-Arz (military department).
Alauddin Khilji (1295–1315) is considered the greatest of all Delhi Sultans, styling himself "Sikandar-i-Sani" (Second Alexander). His general Malik Kafur led the Deccan campaigns, defeating the Kakatiyas (Prataparudra), Hoysalas and installing a puppet at Madurai. His reforms: first Sultan to maintain a permanent standing army paid in cash (Itlaq); the only Sultan to directly control market prices via the Shahna-i-Mandi and secret price-informants (Barids); and a revenue system (Kankut) fixing land tax at 50% of gross produce — the highest ever until the British Ryotwari system.
Muhammad bin Tughlaq is remembered as "the most controversial ruler in Indian history" — scholarly yet impractical. His most debated acts: shifting the capital Delhi → Daulatabad and back; introducing failed token copper currency; and over-taxing the Ganga-Yamuna Doab. On the positive side, he created the Diwan-i-Kohi (first agricultural development department) and was the only Sultan to ban Sati. Under him the empire reached its greatest territorial extent even as it began disintegrating — Bengal, then the Vijayanagara Empire (1336) and Bahmani Sultanate (1346) broke away. Feroz Shah Tughlaq built four canals, founded cities including Ferozabad and Jaunpur, and was the first Sultan to provide free public healthcare (Dar-ul-Shifa).
The Sayyid Dynasty (Khizr Khan) governed as Timur's representatives after his 1398 sack of Delhi. The Lodi Dynasty's Sikandar Lodi founded Agra (1503) but persecuted Kabir. Ibrahim Lodi, the last Sultan, faced a noble revolt — his own uncle and Rana Sanga of Mewar invited Babur to invade. Babur defeated and killed Ibrahim Lodi at the First Battle of Panipat, 1526, ending the Sultanate and founding the Mughal Empire.
Four central Diwans: Diwan-i-Wazirat (finance, under the Wazir), Diwan-i-Arz (military, created under Balban), Diwan-i-Insha (royal correspondence), and Diwan-i-Risalat (religious/judicial, under the Qazi). Territory ran Sarkar → Shiq → Pargana.
