How did Eastern Europe gain freedom from communism?

Eastern Europe gained freedom from communism primarily through a combination of popular uprisings, reform movements, and the weakening of Soviet influence in the late 1980s. The fall of the Berlin Wall in 1989 symbolized the collapse of communist regimes, as citizens in countries like Poland, Czechoslovakia, and Hungary organized mass protests and strikes demanding democratic reforms. The Soviet Union's decision under Mikhail Gorbachev not to intervene militarily further enabled these movements. By the early 1990s, most Eastern European countries had transitioned to democratic governance, marking the end of communist rule in the region.