There were several groups who fought for independence, the most notable being the Provisional Government of the Republic of Korea () was adopted as the legal English name for the new country.Since the government only controlled the southern part of the Korean Peninsula, the informal term South Korea was coined, becoming increasingly common in the Western world.South Korea is a member of the ASEAN Plus mechanism, the United Nations, Uniting for Consensus, G20, the WTO and OECD and is a founding member of APEC and the East Asia Summit. The name Goryeo itself was first used by the ancient kingdom of Goguryeo in the 5th century as a shortened form of its name.The 10th-century kingdom of Goryeo succeeded Goguryeo, Despite the coexistence of the spellings Corea and Korea in 19th century publications, some Koreans believe that Imperial Japan, around the time of the Japanese occupation, intentionally standardised the spelling on Korea, making Japan appear first alphabetically.In 1897, the Joseon dynasty changed the official name of the country from Joseon to Daehan Jeguk (Korean Empire).
Archaeology indicates that the Korean Peninsula was inhabited by early humans starting from the Lower Paleolithic period (2.6 Ma–300 Ka).. The Korean War began in 1950 when forces from the North invaded the South. S., China, the Soviet Union and several other nations.The name Korea is derived from Goryeo, a dynasty which ruled from the 10th to 14th centuries.South Korea lies in the north temperate zone and has a predominantly mountainous terrain. zone in 1948 which led to the creation of the Republic of Korea (ROK), while the Democratic People's Republic of Korea (DPRK) was established in the Soviet zone.However, the name Joseon was still widely used by Koreans to refer to their country, though it was no longer the official name.Under Japanese rule, the two names Han and Joseon coexisted.