Who did the United States fight against 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, was characterized by major global conflicts where these nations were part of the Axis Powers. Japan was involved in significant battles across the Pacific, while Germany and Italy participated in extensive campaigns across Europe and North Africa.

The selection of these three countries reflects the alliance and military efforts faced by the United States and its allies throughout the war. In contrast, the other options include combinations of countries that were either allies of the US or had different roles during the war, such as France and Britain, who were part of the Allies, or Spain, which remained neutral throughout the conflict. Thus, option A accurately represents the primary adversaries the United States confronted during World War II.