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.
Constitution Day (South Korea)
Although the Korean Peninsula was liberated from Imperial Japanese rule by the Allies at the end of World War II on 15 August 1945, it was caught in the middle of a Cold War power struggle between the Soviet Union and the United States. It took until 1948 for a democratic election for National Assembly members to be held in South Korea. The elected assembly members set upon creating a constitution, and decided upon a presidential and unicameral system. The constitution was formally adopted and promulgated by South Korean President Syngman Rhee on 17 July 1948.