Qasim Khanate
The Qasim Khanate (also called Qasimov, Kasimov, or Kasim), also known as the Tsardom of Kasimov (Russian: Касимовское царство), was a Tatar-ruled khanate which existed from 1452 until 1681 on the territory of the Russian state. It was located within modern-day Ryazan Oblast with its capital at Kasimov, in the middle course of the Oka River.