The Delhi Sultanate was a Muslim sultanate (a type of government headed by a sultan) based in Delhi. It covered large parts of the Indian subcontinent for 320 years. The sultanate was initiated by Qutb al-Din Aibak, a former Mamluk slave, and his dynasty conquered much of northern India.
Five dynasties ruled over the Delhi Sultanate: the Mamluk dynasty, the Khalji dynasty, the Tughlaq dynasty, the Sayyid dynasty, and the Lodi dynasty. The sultanate reached its largest size under the Tughlaq synasty. In 1526, the Sultanate was conquered and succeeded by the Mughal Empire.