The term 'SUPERPOWER FORMER' can be summed up by the crossword solution USSR, which stands for the Union of Soviet Socialist Republics. The USSR was a Marxist-Leninist state that existed from 1922 to 1991 and was the world's first constitutionally socialist state. It was a superpower during the Cold War, and its influence extended throughout Eastern Europe, Asia, and Africa. The USSR was dissolved in 1991, ending the Cold War and ushering in a new era of international relations.