Belarusian

Belarusian is an East Slavic language. It is one of the two official languages in Belarus, the other being Russian. It is also spoken in parts of Russia, Lithuania, Latvia, Poland (where it is the official language in 5 bilingual municipalities), Ukraine, and the United States by the Belarusian diaspora.

Before Belarus gained independence in 1991, the language was known in English as Byelorussian or Belorussian, or alternatively as White Russian. Following independence, it became known as Belarusian, or alternatively as Belarusan.

As one of the East Slavic languages, Belarusian shares many grammatical and lexical features with other members of the group. To some extent, Russian, Ukrainian, and Belarusian retain a degree of mutual intelligibility. Belarusian descends from a language generally referred to as Ruthenian (13th to 18th centuries), which had, in turn, descended from what is referred to as Old East Slavic (10th to 13th centuries).

From Wikipedia · Belarusian language · CC BY-SA 4.0