The Barak Valley is a valley located in the southern region of the Indian state of Assam. The main city of the valley is Silchar. The region is named after the Barak river. The Barak valley mainly consists of three administrative districts of Assam State - namely Cachar, Karimganj, and Hailakandi. Among these three districts, Cachar belonged to the Kachari Kingdom before the British Raj, whereas Karimganj and Hailakandi belonged to the Sylhet district of then Assam province. Karimganj was separated from Sylhet after the 1947 referendum; with the rest of Sylhet falling under East Pakistan and Karimganj under India.