Khalji dynasty of Bengal

The Khalji dynasty (Bengali: খলজি রাজবংশ, Persian: خاندان خلجی) was the first Muslim dynasty to rule Bengal. The dynasty, which hailed from the Garmsir region of present-day Afghanistan, was founded in 1204 by Muhammad Bakhtiyar Khalji, a Muslim Turko-Afghan general of the Ghurid Empire. The Khaljis initially pledged allegiance to Sultan Muhammad of Ghor until his death in 1206, though their rule in Bengal was mostly independent. Under the rule of Iwaz Khalji, Bengal experienced major developments such as its first naval force, flood defence systems and linkage with the Grand Trunk Road. The dynasty was based in the city of Lakhnauti in northern Bengal, later expanding eastwards and southwards. Nasiruddin Mahmud, the son of Mamluk sultan Iltutmish of Delhi managed to conquer Bengal in 1227; although the Khaljis briefly reasserted their independence, they surrendered to the Mamluks in 1231, who replaced them with a series of regional governors.