List of ambassadors of the United States to South Korea
At the end of World War II, American forces accepted Imperial Japan's surrender in southern Korea, and Soviet forces accepted the surrender of the Japanese in northern Korea. Talks to agree upon a unity government for Korea failed and in 1948, two separate Korean states were created: the Republic of Korea (South Korea) and the Democratic People's Republic of Korea (North Korea). The United States established diplomatic relations with the new South Korean government, but did not recognize North Korea. Other countries, like the Soviet Union, recognized the Pyongyang government in North Korea, but did not initially establish relations with the South Korean government in Seoul.
South Korea
Historically, Korea had close relations with the dynasties in China, and some Korean kingdoms were members of the Imperial Chinese tributary system. The Korean kingdoms also ruled over some Chinese kingdoms including the Kitan people and the Manchurians before the Qing dynasty and received tributes from them. In modern times, before the formation of South Korea, Korean independence fighters worked with Chinese soldiers during the Japanese occupation. However, after World War II, the People's Republic of China embraced Maoism while South Korea sought close relations with the United States. The PRC assisted North Korea with manpower and supplies during the Korean War, and in its aftermath the diplomatic relationship between South Korea and the PRC almost completely ceased. Relations thawed gradually and South Korea and the PRC re-established formal diplomatic relations on August 24, 1992. The two countries sought to improve bilateral relations and lifted the forty-year-old trade embargo, and South Korean–Chinese relations have improved steadily since 1992. The Republic of Korea broke off official relations with the Republic of China (Taiwan) upon gaining official relations with the People's Republic of China, which doesn't recognise Taiwan's sovereignty.