History of Belarus – Wikipedia

The history of Belarus, or more precisely of the Belarusian ethnicity, begins with the migration and expansion of the Slavic peoples throughout Eastern Europe between the 6th and 8th centuries. East Slavs settled on the territory of present-day Belarus, Russia and Ukraine, assimilating local Baltic (Yotvingians, Dniepr Balts), Finno-Ugric (in Russia) and steppe nomads (in Ukraine) already …

https://en.wikipedia.org/wiki/History_of_Belarus