Some peculiarities of ethnic and language transformations of Mongol-speaking people of Pribaikalye the antiquity and the middle ages

Presence of a plenty of lexical parallel of the Buryat language with tungus-manchurian proves relathionship of these languages. Ancestors Mongolian and Tungus-Manchurian people made the uniform breeding union. It entitles to confirm, that ancestors of Mongolian people, including Buryat, send from the east.