In south-eastern Nepal, Simraungarh annexed Mithila around 1100 AD, and the unified Tirhut stood as a powerful kingdom for more than 200 years, even ruling over Kathmandu for a time. After another 300 years of Muslim rule, Tirhut came under the control of the Sens of Makawanpur. In the eastern hills, a confederation of Kirat principalities ruled the area between Kathmandu and Bengal.