| The Union of Soviet Socialist Republics (USSR) was founded in 1922 with four republics. By its dissolution in 1991, it was a confederation of 15 republics. The Russian Soviet Federated Socialist Republic (SFSR) was by far the largest of the union republics, spanning two continents. Other republics--called Soviet Socialist Republics (SSRs)--were located in Central Asia, Transcaucasia, Eastern Europe, and the Baltics. The 15 union republics are now independent countries. |