Which American territory was occupied by the Japanese during World War II?

The correct answer is the Aleutian Islands, which were indeed occupied by Japanese forces during World War II. In 1942, after the attack on Pearl Harbor, the Japanese launched operations that targeted remote parts of the U.S. This included a significant effort to capture Attu and Kiska, two of the islands in the Aleutian chain, which allowed Japan to establish a foothold in North America. The occupation lasted until 1943, when U.S. forces conducted a campaign to reclaim these islands, marking the only part of the continental United States to have been occupied by enemy forces during the war.

Hawaii and Alaska, while strategically important, were not occupied territories during the war. Hawaii was a U.S. state and therefore had military defenses in place following the attack on Pearl Harbor. Alaska was also part of the U.S. and did not experience direct occupation, even though it was a site of several battles and military activity. Guam, while occupied, does not pertain to the Aleutian Islands specifically and had its own separate circumstances during the war. The question specifically relates to the Aleutian Islands, making it the accurate choice regarding Japanese occupation.