page_title: Eastern Belorussia
hierarchical_section_title: Eastern Belorussia
caption_attribution_description: English: West Belarus (administered by the 2nd Polish Republic) in Green, East Belarus (administered by the USSR) in Red. Belarus region shown outlined by yellow.
context_page_description: East Belarus usually refers to the part of Belarus that was part of the Soviet Union between 1919 and 1939, as opposed to West Belarus that was part of the Second Polish Republic at that time.
  The region was known as the Socialist Soviet Republic of Byelorussia in 1919 - 1920 and the Byelorussian Soviet Socialist Republic in 1920 - 1939.
  In 1939 West Belarus was annexed by the USSR following the Soviet invasion of Poland and became part of the Byelorussian Soviet Socialist Republic.
context_section_description: East Belarus usually refers to the part of Belarus that was part of the Soviet Union between 1919 and 1939, as opposed to West Belarus that was part of the Second Polish Republic at that time.
  The region was known as the Socialist Soviet Republic of Byelorussia in 1919 - 1920 and the Byelorussian Soviet Socialist Republic in 1920 - 1939.
  In 1939 West Belarus was annexed by the USSR following the Soviet invasion of Poland and became part of the Byelorussian Soviet Socialist Republic.
caption: East Belarus shown in red
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