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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 · 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 …

  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 …

  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. 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 …

  7. Sussan Ley gaffe: Opposition leader mistakenly refers to USSR's …

    3 days ago · In a slip of the tongue, the opposition leader said Ukraine was illegally occupied by “the USSR”, which was formally dissolved over 34 years ago.

  8. Republics of the Soviet Union - Wikipedia

    Chapter 8 of the 1977 Soviet Constitution is titled as the "Soviet Union is a union state". Article 70 stated that the union was founded on the principles of "socialist federalism" as a result of the …

  9. 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 …

  10. USSR established | December 30, 1922 | HISTORY

    Nov 24, 2009 · On December 30, 1922, in post-revolutionary Russia, the Union of Soviet Socialist Republics (USSR) is established, comprising a confederation of Russia, Belorussia, Ukraine …