The fourth volume of the “History of the Tatars” is dedicated to the period of the collapse of the Golden Horde, which lasted for many years and almost the entire 15th century. and gave impetus to the formation of new Turkic-Tatar states, Tatar yurts (Kazan, Siberian, Crimean, Astrakhan khanates, Nogai Horde, political entities in the lands of the Grand Duchy of Lithuania, in the Balkans). From various local Turkic tribes, primarily the Kipchaks and Bulgars, and newcomers, Central Asian and Central Asian Turks - from the Tatar-Mongols and eastern Kipchaks during the Golden Horde period, the Tatar people were formed. Almost all Tatar states were conquered by the new, powerful Moscow state, which for several centuries was subordinate to the Tatar khans of the Golden Horde and Tatar yurts. The last state - the Crimean Khanate - was annexed to Russia in the 18th century.