Delhi Sultanate , main Muslim sultanate in North India from the 13th to the 16th centuries. It owed its foundation mainly to the campaigns of Muʿizz al-Dīn Muḥammad ibn Sām (Muḥammad of Ghūr; brother of Sultan Ghiyāth al-Dīn of Ghūr) and his lieutenant Quṭb al-Dīn Aibak between 1