G[] 10of 2 American Society (1945-1950s) - Cold War Impact Sierra Harwell History 121: The U.S. from 1865 June 4, 2023 The Cold War happened after World War II. In which The United States and The Soviet Union were in conflict and had tension rising for decades. The Cold War impacted American Society the most out of all wars due to constant fear from the unknown that was happening and going to happen. The United States changed drastically during this period, it took a toll on American lives and money. Economic changed drastically but most importantly the cold war led American people into regression of social reforms.