One of the main trends in the language development of the Republic of Tatarstan is bilingualism. The most common type of bilingualism is Tatar-Russian bilingualism. Nationalnational bilingualism is widespread in the border areas of the Republic (for example, BashkirTatar or Tatar-Bashkir, Tatar-Chuvash or Chuvash-Tatar, etc.). Russian-Tatar bilingualism is of Great social and political importance