History of Korea
After the end of WWII in 1945, the Allies divided the country into a northern area (protected by the Soviets) and a southern area protected (primarily by the United States). In 1948, when the powers failed to agree on the formation of a single government, this partition became the modern states of North and South Korea. The peninsula was divided at the 38th Parallel: the "Republic of Korea" was created in the south, with the backing of the US and Western Europe, and the "Democratic People's Republic of Korea" in the north, with the backing of the Soviets and the communist People's Republic of China. The new premier of North Korea, Kim il-Sung, launched the Korean War in 1950 in an attempt to reunify the country under Communist rule. After immense material and human destruction, the conflict ended with a cease-fire in 1953. The two nations officially remain at war because a peace treaty was never signed. In 1991, both states were accepted into the United Nations.
History of South Korea
Emperor Hirohito announced the surrender of the Empire of Japan to the Allied Powers on 15 August 1945. General Order No. 1 for the surrender of Japan (prepared by the Joint Chiefs of Staff of U.S. military forces and approved on 17 August 1945) prescribed separate surrender procedures for Japanese forces in Korea north and south of the 38th parallel. After Japan's surrender to the Allies (formalised on 2 September 1945), division at the 38th parallel marked the beginning of Soviet and U.S. occupation the North and South, respectively. This division was meant to be temporary, to be replaced by a trusteeship of the United States, United Kingdom, Soviet Union, and Republic of China which would prepare for Korean independence. The trusteeship had been discussed at the Yalta Conference in February 1945. U.S. forces landed at Incheon on September 8, 1945 and established a military government shortly thereafter. Lt. General John R. Hodge, their commander, took charge of the government. Faced with mounting popular discontent, in October 1945 Hodge established the Korean Advisory Council. The Provisional Government of the Republic of Korea, which had operated from China, sent a delegation with three interpreters to Hodge, but he refused to meet with them. Likewise, Hodge refused to recognize the newly formed People's Republic of Korea and its People's Committees, and outlawed it on 12 December. A year later, an interim legislature and interim government were established, headed by Kim Kyu-shik and Rhee Syngman respectively. Political and economic chaos - arising from a variety of causes - plagued the country in this period. The after-effects of the Japanese exploitation remained in the South, as in the North. In addition, the U.S. military was largely unprepared for the challenge of administering the country, arriving with no knowledge of the language, culture or political situation. Thus many of their policies had unintended destabilizing effects. Waves of refugees from North Korea and returnees from abroad added to the turmoil.