The Soviet Socialist Union (ссср), referred to as the Soviet Union, was founded in 1922 and 1922 on February 30th, and was composed of Russian Soviet federalist socialism, Belarusian Soviet socialism and Ukrainian Soviet socialism.
Extended data:
1922, 1922 On February 20th, the Soviet Union merged with Soviet socialist republics such as Russia, Belarus, Ukraine and Transcaucasia to form the Soviet Union.
1924 after the death of Vladimir Lenin, the first Soviet leader, Joseph Stalin defeated Toschi and gained the leadership after a series of power struggles. Stalin took the planned economy as the guarantee and led the country to carry out large-scale industrialization, making the Soviet Union once the country with the highest industrial output value in Europe.
The Soviet Union includes three Eastern Slavic countries (Russian Federation, Ukraine and Belarus), five Central Asian countries (now Uzbekistan, Kazakhstan, Kyrgyzstan, Tajikistan and Turkmenistan), three Transcaucasian countries (Azerbaijan, Armenia and Georgia), three Baltic countries (Lithuania, Estonia and Latvia) and Moldavia, with 15 participating countries, Bashkir and Georgia.
In World War II, the Soviet Union carved up Poland with Germany in 1939, and was invaded by Germany and its axis allies in 194 1 year. After four years of fierce war, it won, and together with the United States became the two most powerful countries in the world at that time, known as "superpowers". At the same time, it occupied most countries in Eastern Europe and supported them.
1936, the Transcaucasian Soviet Socialist Federation split into three republics: Georgia, Armenia and Azerbaijan. 1940- 1956 and the Karelia-Finland Soviet Socialist Republic (1956 merged into the Russian Federation and renamed as the Autonomous Republic of Karelia), and the total number of participating countries in this period was 16.
References:
Baidu Encyclopedia-Soviet Union
Baidu Encyclopedia-Russia