premise: There was a republic of the Soviet Union called the Latvian Soviet Socialist Republic.
hypothesis: The Latvian Soviet Socialist Republic ( Latvian SSR ; Latvijas Padomju Sociālistiskā Republika Латвийская Советская Социалистическая Республика , Latviyskaya Sovetskaya Sotsialisticheskaya Respublika ) , also known as Soviet Latvia or Latvia , was a republic of the Soviet Union . The Soviet Union ( [ Сове́тский Сою́з , r = Sovetskiy Soyuz ] [ sɐ ` vʲetskʲɪj sɐˈjʉs ] ) , officially the Union of Soviet Socialist Republics ( USSR ; Сою́з Сове́тских Социалисти́ческих Респу́блик , [ sɐˈjus sɐˈvʲɛtskʲɪx sətsɨəlʲɪsˈtʲitɕɪskʲɪx rʲɪˈspublʲɪk ] ) , also known unofficially as Russia ( [ Росси́я , Rossiya , rɐˈsʲijə ] ) , was a socialist state in Eurasia that existed from 1922 to 1991 .