Excerpts from Books and Wikipedia
"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 an attack by the Mongols (from the Chagatai Khanate), caused the decline of Buddhism in East India and Bengal, and enthroned one of the few female rulers in Islamic history, Razia Sultana, who reigned from 1236 to 1240. . . . 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." [Wikipedia]