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.
People's Republic of Korea
The People's Republic of Korea (PRK) was a short-lived provisional government that was organized at the time of the surrender of the Empire of Japan at the end of World War II. It was proclaimed on September 12, 1945, as Korea was being divided into two occupation zones, with the Soviet Union occupying the north, and the United States occupying the south. Based on a network of people's committees, it presented a program of radical social change. In the south, the US military government outlawed the PRK on December 12, 1945, while in the north, the Soviet authorities co-opted the committees into the structure of the emerging Democratic People's Republic of Korea (North Korea).