This volume of the seven-volume publication "History of the Tatars from Ancient Times" is devoted to the history of Volga Bulgaria before the Mongol conquests, but it also covers a large number of problems associated with the Finno-Ugric neighbors of the Bulgars and the Turkic-speaking, mainly nomadic, population of the Great Steppe. This is simply explained: it is impossible to imagine the history of the Bulgarian state outside its Finno-Ugric and Turkic-speaking environment.