The Union of Soviet Socialist Republics
The Union of Soviet Socialist Republics. The USSR was the whole thing, including Russia. Kazakhstan was the next largest after Russia.
Union of Soviet Socialist Republics
Union of Soviet Socialist Republics.
Union of Soviet Socialist Republics.
United Soviet Socialist Republics is the full, official name for the Soviet Union and often abbreviated USSR.
USSR is how the Soviet Union was abbreviated by English speaking people. It stands for Unior of Soviet Socialist Republics. There were several SSR's, Soviet Socialist Republics.
Fifteen.
There were fifteen.
U.S.S.R stands for the Union of Soviet Socialist Republics, which was made by Russia in 1922 when it joined the Ukraine, Belorussia and the Transcaucasian Republic (Armenia, Georgia and Azerbaijan). Over the next number of years, the USSR absorbed other republics into it.
Russia is not composed of fifteen republics. This outdated question is referring to the former U.S.S.R. The answer, by the way, is the Russian Soviet Federative Socialist Republic.
1917