The Japanese invasion of Alaska was the first foreign invasion of the United States since which war?

• A. War of 1812
• B. World War I
• C. Civil War
• D. Spanish-American War

Answer: (A)

The main idea here is when foreign troops actually occupied U.S. soil. The Japanese landing and short occupation of parts of the Aleutian Islands in Alaska during 1942–1943 marked the first time since the War of 1812 that a foreign power controlled American territory. In the War of 1812, British forces invaded and raided U.S. areas (including the burning of Washington, D.C.), showing that foreign troops could reach and occupy U.S. land. After that, there were no such invasions until World War II, when Japan attacked Alaska. The other options don’t fit because they involve internal conflict or did not involve foreign powers occupying U.S. land.