Slavicized

Many other Eastern and Southern Balts either assimilated with other Balts, or Slavs in the 4th–7th centuries and were gradually slavicized.

Over time, due to the larger number of Slavs, most descendants of the indigenous populations of the Balkans were Slavicized.

Scandinavians ( Varangians ) and Finnic peoples were involved in the early formation of the Rus' state but were completely Slavicized after a century.

There were even expectations that the language would become extinct, as more and more territories in the east were slavicized, and more people used Polish or Russian in daily life.