How did communism decline around the world in the Cold War?

Communism declined during the Cold War primarily due to economic stagnation, political repression, and the inability to meet the needs of citizens in various countries. The Soviet Union's invasion of Afghanistan in 1979 further weakened its global standing, while reform movements, such as Solidarity in Poland, inspired resistance against communist regimes. The eventual fall of the Berlin Wall in 1989 symbolized the collapse of communism in Eastern Europe, leading to a wave of democratization and the dissolution of the Soviet Union in 1991. These events collectively marked a significant shift away from communist ideologies worldwide.