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 1991.

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 square …

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.

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).

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 …

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 largest …

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.

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 …

The number of the union republics of the USSR varied from 4 to 16. From 1956 until its dissolution in 1991, the Soviet Union consisted of 15 Soviet Socialist Republics: in 1956, the Karelo-Finnish Soviet …

Sep 28, 2010 · Just as the First World War and the Bolshevik Revolution defined the start of the ‘short’ twentieth century, so the ending of the Cold War and the disintegration of the USSR marked its …