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  1. Soviet Union - Wikipedia

    During its existence, the Soviet Union produced many significant social and technological achievements and innovations. The USSR was one of the most advanced industrial states …

  2. 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 …

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

    Dec 19, 2025 · At its greatest extent, between 1946 and 1991 (the figures and descriptions given below refer to this period), the U.S.S.R. covered some 8,650,000 square miles (22,400,000 …

  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. 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 …

  6. 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 …

  7. What was the USSR? - History Skills

    Founded after the collapse of the Russian Empire and the Bolshevik victory in the Russian Civil War, the USSR combined revolutionary ideals with centralised rule under the Communist Party.

  8. The Soviet Union - WorldAtlas

    Jul 16, 2021 · The Soviet Union, formally known as the Union of Soviet Socialist Republics, or USSR for short, was a country that was composed of 15 different units, known as republics. …

  9. Soviet Union - Wikiwand

    The USSR was one of the most advanced industrial states during its existence. It had the world's second-largest economy and largest standing military. As a nuclear state, it wielded the …

  10. Putin plans to trigger WW3 by reforming USSR amid promise

    Dec 20, 2025 · Putin plans to trigger WW3 by reforming USSR as Russian leader issues chilling threat Putin refused to rule out new military action when he was asked at his annual Q&A on …