USSR Full Form is the Union of Soviet Socialist Republics
USSR stands for Union of Soviet Socialist Republics. Union of Soviet Socialist Republics was a country that existed from 1917 to 1991. It was made up of 15 republics and was originally called the Russian Empire. The Union of Soviet Socialist Republics was the first country to declare itself a socialist state, and it was also the first to declare itself a communist state. The country was founded by Vladimir Lenin and his Bolshevik Party in 1917, and it lasted until 1991 when it dissolved into 15 separate countries. The Union of Soviet Socialist Republics was a dictatorship, and it was ruled by the Communist Party. The party controlled everything in the country, and people had no say in what happened. The government was very corrupt, and many people were killed or sent to prison camps. The economy was also very bad, and life was very difficult for the average person. Despite all of these problems, the Union of Soviet Socialist Republics was a great country, and it played a very important role in the history of the world.