Who did the United States fight in World War II?

1. World War II set the United States against three countries. 2. Those countries were Japan, Germany, and Italy. 3. Great Britain was not one of them, so the option naming Britain is wrong. 4. Korea gave its name to a later war, the Korean War, and was not one of the three. _Source: USCIS Civics Flash Cards M-623 (rev. 02/12), public domain, official civics question 81_