Who did the United States fight in World War II?

The United States fought against Japan, Germany, and Italy during World War II. This conflict, which lasted from 1939 to 1945, involved multiple nations aligned in two main opposing military alliances: the Allies and the Axis powers. The Axis powers primarily comprised Germany, Italy, and Japan, who cooperated in their military objectives to expand their territories and influence.

Germany, under Adolf Hitler, launched aggressive campaigns in Europe, prompting England and France to declare war. Italy, allied with Germany, contributed to the Axis efforts in North Africa and the Mediterranean. Meanwhile, Japan expanded its empire throughout Asia and the Pacific, leading to a direct conflict with the United States, particularly after the attack on Pearl Harbor in December 1941.

Other choices presented nations either not involved in the central conflict against the United States or allied with them during the war. For instance, France and Britain were allies of the United States, fighting against the Axis powers, while countries like China and Russia had their own separate engagements during the war, even though they were part of the broader Allied forces. Germany, Austria, and Hungary were involved in the war, but Austria was annexed into Germany before the war began, making it not a separate fighting entity during the conflict