Khanate of Sibir
On January 6, 1481, Akhmat Khan was killed in a clash with the Nogais under Ibak Khan, a princeling from the Khanate of Sibir. In 1502, Crimea destroyed the Great Horde as an organization thereby removing the buffer between Russia and Crimea and leading to a series of Russo-Crimean wars that lasted until 1784.