Preceded by Category:Bukharan PSR Category:Byelorussian SSR Category:Estonia Category:Finland Category:Khorezm PSR Category:Kingdom of Romania Category:Latvia Category:Lithuania Category:Russian SFSR Category:Second Polish Republic Category:Transcaucasian SFSR Category:Tuvan PR Category:Ukrainian SSR History of Russia Category:Soviet Union 1922–1991 Succeeded by Category:Armenia Category:Azerbaijan Category:Belarus Category:Estonia Category:Georgia Category:Kazakhstan Category:Kyrgyzstan Category:Latvia Category:Lithuania Category:Moldova Category:Russia Category:Tajikistan Category:Turkmenistan Category:Ukraine Category:Uzbekistan

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Categories and articles on the Soviet Union, the state ruled by the Communist Party of the Soviet Union between December 1922 and December 1991.