Why was the eastern bloc formed in the cold war?

The Eastern Bloc was formed during the Cold War as a result of the Soviet Union's desire to expand its influence in Eastern Europe after World War II. This bloc consisted of communist states that were aligned with the USSR, primarily to counter the perceived threat from the capitalist West, particularly the United States and its allies. The Eastern Bloc aimed to create a buffer zone against potential invasions and to promote communist ideology. This division solidified the geopolitical tensions that characterized the Cold War era.