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The Union of Soviet Socialist Republics (abbreviated USSR, Russian: Союз Советских Социалистических Республик, СССР; tr.: Soyuz Sovetskikh Sotsialisticheskikh Respublik, SSSR), also called the Soviet Union (Russian: Советский Союз; tr.: Sovetsky Soyuz), was a constitutionally socialist state that existed in Eurasia from 1922 to 1991. |
