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  1. Soviet Union - Wikipedia

    The Union of Soviet Socialist Republics[o][p] (USSR), [q] also known as the Soviet Union, [r] was a transcontinental country that spanned much of Eurasia from 1922 until its dissolution in 1991. It was …

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

    Jan 25, 2026 · During the period of its existence, the Union of Soviet Socialist Republics was by area the world’s largest country. It was also one of the most diverse, with more than 100 distinct nationalities …

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

    May 6, 2025 · The USSR was a large communist country made up of Russia and 14 other countries. The USSR was founded in 1922 and dissolved in 1991 after Gorbachev's reforms failed.

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

    Sep 1, 2017 · A 1922 treaty between Russia, Ukraine, Belarus and Transcaucasia (modern Georgia, Armenia and Azerbaijan) formed the Union of Soviet Socialist Republics (USSR).

  5. Everything you should know about the USSR - Russia Beyond

    The country called the Union of Soviet Socialist Republics (USSR) was established in 1922, when parts of the former Empire became autonomous and joined the Union after the civil war.

  6. Former Soviet Union (USSR) Countries - WorldAtlas

    Feb 14, 2023 · The Soviet Union (or the Union of Soviet Socialist Republics - USSR) was a giant single-party communist state formed by the federal union of 15 national republics. It existed from 1922 to …

  7. Soviet Union - New World Encyclopedia

    Efforts to develop a capitalist economy while creating a new socialist government system failed. What resulted was a command economic system with an increasingly totalitarian political system. During …

  8. Soviet Union - dw.com

    Nov 26, 2025 · The Soviet Union was a transcontinental state comprising of 15 republics that spanned much of Eurasia from 1922 to 1991.

  9. The Soviet Socialist Republics | World History - Lumen Learning

    The Soviet Union, officially the Union of Soviet Socialist Republics (USSR), was a federation of Soviet Republics that were outwardly independent nations, but existed essentially as satellite states under …

  10. History of the Soviet Union | Map and Timeline

    Oct 13, 2024 · The USSR gained and lost influence with other Communist countries over time. The occupying Soviet army facilitated the establishment of post-WWII Communist satellite states in …