The division of Korea began at the end of World War II on 2 September 1945, with the establishment of a Soviet occupation zone in the north and a US occupation zone in the south. These zones developed into separate governments, named the Democratic People's Republic of Korea (North Korea) and the Republic of Korea (South Korea), which fought a war from 1950 to 1953. Since then the division has continued.
By the early 20th century, both countries were one single nation: the Korean Empire, only to be annexed by the Empire of Japan in 1910. During World War II, the Allied leaders had already been considering the question of Korea's future following Japan's eventual surrender in the war.