when was the former formed?
1922
Soviet Union
 By 1922, the Bolsheviks had emerged victorious, forming the Soviet Union with the unification of the Russian, Transcaucasian, Ukrainian and Byelorussian republics.
where was the 1956 winter olympics held? Cortina d'Ampezzo, Italy can you name a few nations that participated in this event? Soviet Union, Bolivia, Iran
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Soviet Union [SEP] Introduction
The Red Army expanded and helped local Bolsheviks take power, establishing soviets, repressing their political opponents and rebellious peasants through the policies of Red Terror and War Communism. By 1922, the Bolsheviks had emerged victorious, forming the Soviet Union with the unification of the Russian, Transcaucasian, Ukrainian and Byelorussian republics. The New Economic Policy (NEP), which was introduced by Lenin, led to a partial return of a free market and private property; this resulted in a period of economic recovery. Following Lenin's death in 1924, Joseph Stalin came to power. Stalin suppressed all political opposition to his rule inside the Communist Party and initiated a centrally planned economy.