December 7, 1941
WHEN THEY ACTED AS GUERILLAS.
the U.S. became involded in WWII after Japan attacked Pearl Harbor
because pearl harbor in Hawaii was bombed by japan bombers
They were invaded by Japan.
japan
Capital of Japan
Because the U.S. were isolationists until Japan attacked Pearl Harbor.They vowed that they were going to be nutreal,but when Japan destroyed Pearl Harbor the U.S declared war on Japan the next day.Then Germany declared war on the U.S. so they got involved into WWII.
Japan
Japan and Germany
japan
World War 2 was in Japan during the years of World War 2, which was 1939 to 1945. Japan's involvement increases after Pearl Harbor attack in December 1941. This also involved the United States into the war.
Antarctica was not involved in World War I, because there was no nation-state on the continent to become involved.