After the Japanese attack on Pearl Harbor on December 7,1941, the United States entered World War II alongside the Allies and helped defeat Nazi Germany in Europe and, with the detonation of newly invented atomic bombs, Japan in the Far East.
The United States entered World War II alongside the Allies. This was after the Japanese attack on Pearl Harbor on December 7,1941. The United States helped defeat Nazi Germany in Europe and Japan in the Far East. This was with the detonation of newly invented atomic bombs. This was after the Japanese attack on Pearl Harbor on December 7,1941.