On December 30th, 1922, the Union of Soviet Socialist Republics (USSR) was formally established, uniting several Soviet republics. The USSR played a pivotal role in 20th-century global affairs until its dissolution in 1991.
On December 30th, 1922, the Union of Soviet Socialist Republics (USSR) was formally established, uniting several Soviet republics. The USSR played a pivotal role in 20th-century global affairs until its dissolution in 1991.