Gyeongui Line (1904–1945)
Following Japan's defeat in the Pacific War and the subsequent partition of Korea, the Gyeongui Line was divided at the 38th parallel between North and South Korea. On 25 August 1945, the Soviet Army began operating trains on the line north of Sariwon, whilst trains in the south terminated at Gaeseong. In 1946, the railways in both North and South were nationalised, creating the Korean National Railroad in the South and the Korean State Railway in the North. After the Korean War, the Gyeongui Line was split into three sections. In the South, the Seoul–Jangdan section became the KNR's Gyeongui Line, retaining the same name; in the North, the Bongdong–Pyeongyang section became the P'yŏngbu Line, whilst the Pyeongyang–Sinuiju section became the P'yŏngŭi Line.
Economy of North Korea
This trend did not reverse until after the end (1945) of World War II, when more than 2 million Koreans moved from North to South following the division of Korea into Soviet and American military zones of administration. This southward exodus continued after the establishment of the Democratic People's Republic of Korea (North Korea) in 1948 and during the 1950–53 Korean War. The North Korean population as of October 2008 was given as 24 million.