Byelorussian Soviet Socialist Republic

Беларуская Савецкая Сацыялістычная Рэспубліка (Belarusian)
Белорусская Советская Социалистическая Республика (Russian)
StatusSoviet Socialist Republic (1922–1991)
CapitalMinsk
Common languagesOfficial languages:
Belarusian · Russian
Minority languages:
Polish · Ukrainian · Yiddish
GovernmentUnitary Marxist-Leninist one-party Soviet-style socialist republic (1920-1929; 1953-1990)
Stalinist one-party totalitarian dictatorship (1929-1953)
Unitary parliamentary republic (1990-1991)
First Secretary 
• 1920–1923
Vilhelm Knorinsh (first)
• 1990–1991
Anatoly Malofeyev (last)
Head of state 
• 1920–1937
Alexander Chervyakov (first)
• 1990–1991
Nikolay Dementey
• 1991
Stanislav Shushkevich (last)
Head of government 
• 1920–1924
Alexander Chervyakov (first)
• 1990–1991
Vyacheslav Kebich (last)
LegislatureSupreme Soviet
Historical era20th century
• Republic declared
1 January 1919
• Soviet republic proclaimed
31 July 1920
• Admitted to Soviet Union
30 December 1922
• Annexation of Western Belarus
15 November 1939
• UN membership
24 October 1945
• Sovereignty declared
27 July 1990
• Independence declared
25 August 1991
• Renamed Republic of Belarus
9 September 1991
• Internationally recognized
26 December 1991
• New Constitution
15 March 1994