Discussion: What was the USSR (Union of Soviet Socialist Republics) and how was it formed?
Red Guards at a factory in 1917
The Union of Soviet Socialist Republics (also known as the USSR or Soviet Union for short) consisted of Russia and surrounding countries that today make up Armenia, Azerbaijan, Belarus, Estonia, Georgia, Kazakhstan, Kyrgyzstan, Latvia, Lithuania, Moldova, Russia, Tajikistan, Turkmenistan, Ukraine, and Uzbekistan.
The USSR was founded in 1922, five years after the Russian Revolution overthrew the monarchy of the czar, and was dissolved in late 1991.
The Commonwealth of Independent States was a somewhat unsuccessful effort by Russia to keep the USSR together in an economic alliance.
Of the fifteen constituent republics of the USSR, three of these countries declared and were granted independence a few months preceding the fall of the Soviet Union in 1991. The remaining twelve did not become independent until the USSR fell completely on December 26, 1991.
Discussion: Why did the Soviet Union fall?
Collapse of Soviet Union