What happened in 1949 what did America fear?

Answer 1

In 1949, the Soviet Union successfully tested its first atomic bomb, marking a significant escalation in the Cold War and heightening tensions between the U.S. and the USSR. This event led to widespread fear in America of a nuclear arms race and the potential threat of Soviet aggression. The fear of communism spreading globally also intensified, prompting increased military and political efforts to contain Soviet influence, exemplified by the establishment of NATO and the onset of the Korean War.