Who did the United States fight during World War II?

The United States fought against Japan, Germany, and Italy during World War II. This conflict was primarily driven by the aggression exhibited by these nations, which were part of the Axis powers. Japan's surprise attack on Pearl Harbor in December 1941 prompted the U.S. to enter the war against Japan. Meanwhile, Germany and Italy, allied with Japan, engaged in extensive military campaigns across Europe and North Africa.

The Axis powers sought to expand their territories through military conquests, which led to widespread conflict globally. The U.S. response was significant, as it mobilized its military and economic resources to combat the threats posed by these nations. The coordinated military efforts against Japan in the Pacific and Germany and Italy in Europe defined the U.S. involvement in World War II, ultimately leading to the defeat of the Axis powers and the restoration of peace in 1945.

The other options include countries that did not align with the Axis and were not adversaries of the United States during this time, which clarifies why they do not constitute the correct answer.