![Emblem of the Byelorussian SSR (1927)](https://upload.wikimedia.org/wikipedia/commons/c/cd/Emblem_of_the_Byelorussian_SSR_%281927-1937%29.svg)
East Belarus usually refers to the part of
Belarus
Belarus,, , ; alternatively and formerly known as Byelorussia (from Russian ). officially the Republic of Belarus,; rus, Республика Беларусь, Respublika Belarus. is a landlocked country in Eastern Europe. It is bordered by R ...
that was part of the
Soviet Union
The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national ...
between 1919 and 1939, as opposed to
West Belarus
Western Belorussia or Western Belarus ( be, Заходняя Беларусь, translit=Zachodniaja Bielaruś; pl, Zachodnia Białoruś; russian: Западная Белоруссия, translit=Zapadnaya Belorussiya) is a historical region of mod ...
that was part of the
Second Polish Republic
The Second Polish Republic, at the time officially known as the Republic of Poland, was a country in Central Europe, Central and Eastern Europe that existed between 1918 and 1939. The state was established on 6 November 1918, before the end of ...
at that time.
The region was known as the
Socialist Soviet Republic of Byelorussia
The Socialist Soviet Republic of Byelorussia or Soviet Socialist Republic of Belarus (SSRB; be, Савецкая Сацыялістычная Рэспубліка Беларусь, Savieckaja Sacyjalistyčnaja Respublika Biełaruś; russian: ...
in 1919 - 1920 and the
Byelorussian Soviet Socialist Republic
The Byelorussian Soviet Socialist Republic (BSSR, or Byelorussian SSR; be, Беларуская Савецкая Сацыялістычная Рэспубліка, Bielaruskaja Savieckaja Sacyjalistyčnaja Respublika; russian: Белор ...
in 1920 - 1939.
In 1939
West Belarus
Western Belorussia or Western Belarus ( be, Заходняя Беларусь, translit=Zachodniaja Bielaruś; pl, Zachodnia Białoruś; russian: Западная Белоруссия, translit=Zapadnaya Belorussiya) is a historical region of mod ...
was annexed by the USSR following the
Soviet invasion of Poland
The Soviet invasion of Poland was a military operation by the Soviet Union without a formal declaration of war. On 17 September 1939, the Soviet Union invaded Poland from the east, 16 days after Nazi Germany invaded Poland from the west. Subse ...
and became part of the
Byelorussian Soviet Socialist Republic
The Byelorussian Soviet Socialist Republic (BSSR, or Byelorussian SSR; be, Беларуская Савецкая Сацыялістычная Рэспубліка, Bielaruskaja Savieckaja Sacyjalistyčnaja Respublika; russian: Белор ...
.
Historical regions in Belarus
1920s in Belarus
1930s in Belarus
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