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.
It isn't as simple as Russia changing its name. No single nation "became the Union of Soviet Socialist Republics" And it wasn't in 1917. In 1922, Russia, Ukraine, Belorussia and the Transcaucasus Federation (a union of Georgia, Armenia and Azerbaijan) joined together to form the USSR by entering into the Treaty of the Soviet Union. As time went on other nearby republics either joined or were absorbed into the USSR.
Right after the October Revolution, in 1918 Russia was renamed the Russian Soviet Federative Socialist Republic. In 1922 it joined with the republics of Ukraine, Belorussia and the Transcaucasus Federation (Georgia, Armenia and Azerbaijan) to form the Union of Soviet Socialist Republics, the Soviet Union. "Russia" was not simply renamed the Soviet Union.
The Russian Empire changed its name to the Russian Socialist Federal Soviet Republic (RSFSR) in July 1918. It did not simply change its name to the Union of Soviet Socialist Republics. The USSR came about in December 1922, when the RSFSR joined with Ukraine, Belorussia and the Transcaucasus Federation to form the Union of Soviet Socialist Republics.
Belarus, or Belorussia at that time, joined the Soviet Union on December 29, 1922 when the initial Treaty of the Soviet Union was entered into by it and the Russian, Ukraine and Tsanscaucasus Federated Republics.
The Soviet countries all joined the Soviet Union between the years 1920 and 1940. The order by year in which they joined is: Azerbaijan, Armenia, Georgia, Belarus, Ukraine, Russia, Turkmenistan, Uzbekistan, Tajikistan, Kazakhstan, Kyrgyzstan, Moldova, Lithuania, Latvia, and Estonia. They were all then known as Soviet Socialist Republics.
1991 The USSR did not "turn into Russia." The USSR was a collection of many separate republics into one nation much like the United States is a collection of individual states into one nation. In 1991, the USSR broke up into 15 separate nations one of which was the Russian Federation.
After the October Revolution, Russia became the Russian Soviet Federated Socialist Republic. In December 1922, it joined with Ukraine, Belorussia and the Transcaucasus Federation (Georgia, Armenia and Azerbaijan) to form the Union of Soviet Socialist Republics.
The "Russian Soviet Federated Socialist Republic" was the new name for Russia and its incorporated countries after the Revolution. It was not until 1923-1924 that it adopted the name "Union of Soviet Socialist Republics" (USSR) after it joined with Belorussia, Georgia and the Transcaucasus Federation.
SpainAlthough it was a civil war, Germany, Italy, AND Soviet Russia had joined in. (Extended by Melodius92)
USSR. " UNION of SOVIET SOCIALIST REPUBLICS ". People in the US usually refered to it as "Russia", but Russia is just one of the republics that made up the USSR. It started when the individual republics joined after the Russian Revolution and ended when the union was disolved a few years ago. You can look up the exact dates, but the union existed approximately from 1917 to 1999. In Russian, the USSR looks like CCCP
Because after WW2 communism in the Soviet Union started to grow, so a lot of the western European countries (Italy, France, Great Britain, etc) joined together along with the US to face communism.