Kamata Kingdom
The Kamata Kingdom in the eastern Sivalik Hills, emerged in western Kamarupa probably when Sandhya, a ruler of Kamarupanagara, moved his capital west to Kamatapur sometime after 1257 CE. Since it originated in the old seat of the Kamarupa kingdom, and covered most of the western parts of it, the kingdom is also sometimes called as Kamarupa-Kamata. It covered a region corresponding to present-day undivided districts of Kamrup, Goalpara, Jalpaiguri, and Cooch Behar district in India, parts of Rangpur and northern parts of Mymensingh in Bangladesh.