3. Pearl Harbor and U.S. Entry into the War
The surprise attack on Pearl Harbor in December 1941 marked a pivotal moment in the 1940s. Japan’s assault propelled the United States into World War II, energizing the Allied response and altering the conflict’s course. On the home front, American society underwent profound transformations, embracing total war mobilization. For more about this turning point, explore the National WWII Museum.
