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  1. Soviet Union - Wikipedia

    The Union of Soviet Socialist Republics[u] (USSR), [v] commonly known as the Soviet Union, [w] was a transcontinental country that spanned much of Eurasia from 1922 until its dissolution in …

  2. Soviet Union | History, Leaders, Flag, Map, & Anthem | Britannica

    Dec 19, 2025 · Soviet Union (Union of Soviet Socialist Republics; U.S.S.R.), former northern Eurasian empire (1917/22–1991) stretching from the Baltic and Black seas to the Pacific …

  3. Soviet Union - Countries, Cold War & Collapse | HISTORY

    Sep 1, 2017 · In response to NATO, the Soviet Union in 1955 consolidated power among Eastern bloc countries under a rival alliance called the Warsaw Pact, setting off the Cold War.

  4. Soviet Union - New World Encyclopedia

    The Soviet Union was one of the dominant political entities of the twentieth century. The official name was the Union of Soviet Socialist Republics (USSR). The Russian Revolution brought to …

  5. What Was the USSR and Which Countries Were in It? - ThoughtCo

    May 6, 2025 · The Union of Soviet Socialist Republics (also known as the USSR or the Soviet Union) consisted of Russia and 14 surrounding countries. The USSR's territory stretched from …

  6. Formation of the Soviet Union | World History - Lumen Learning

    The Soviet Union, officially the Union of Soviet Socialist Republics, was a socialist state in Eurasia that existed from 1922 to 1991. It was nominally a supranational union of national republics, …

  7. Soviet Union - Wikiwand

    The Union of Soviet Socialist Republics (USSR), commonly known as the Soviet Union, was a transcontinental country that spanned much of Eurasia from 1922 until ...

  8. History of the Soviet Union - Wikipedia

    The Soviet Union emerged as one of the world's two superpowers, leading the Eastern Bloc in opposition to the Western Bloc led by the United States during the Cold War. This period saw …

  9. Soviet Union - Simple English Wikipedia, the free encyclopedia

    The Soviet Union was officially created in December 1922 as the union of the Russian (also known as Bolshevist Russia), Ukrainian, Byelorussian, and Transcaucasian Soviet republics …

  10. Union of Soviet Socialist Republics summary - Britannica

    Communist Party of the Soviet Union (CPSU), the major political party of Russia and the Soviet Union from the Russian Revolution of October 1917 to 1991. (Read Leon Trotsky’s 1926 …