Between 1910 and the end of World War II in 1945, Korea was considered a part of Japan due to Japan's unethical colonization of Korea. In 1945, the USSR declared war on Japan and the United States bombed it (Nagasaki and Hiroshima); severely weakening its empire and forcing it to surrender. Japan's weak status allowed the Soviets to enter Korea fairly freely and occupy the northern half whilst the United States took the southern half. Each then created governments supporting their own ideologies, Marxist–Leninist Single Party State (North) and Democratic Capitalist State (South). 