occasional typhoons bring high winds and floods; low-level seismic activity common in southwest
volcanism: Halla (1,950 m) is considered historically active although it has not erupted in many centuries
slightly smaller than Pennsylvania; slightly larger than Indiana
The first recorded kingdom (Choson) on the Korean Peninsula dates from approximately 2300 B.C. Over the subsequent centuries, three main kingdoms - Kogoryo, Paekche, and Silla - were established on the Peninsula. By the 5th century A.D., Kogoryo emerged as the most powerful, with control over much of the Peninsula, as well as part of Manchuria (modern-day northeast China). However, Silla allied with the Chinese to create the first unified Korean state in the late 7th century (688). Following the collapse of Silla in the 9th century, Korea was unified under the Koryo (Goryeo; 918-1392) and the Chosen (Joseon; 1392-1910) dynasties.
Korea became the object of intense imperialistic rivalry between the Chinese (its traditional benefactor), Japanese, and Russian empires in the latter half of the 19th and early 20th centuries. Following the Sino-Japanese War (1894-95) and the Russo-Japanese War (1904-1905), Korea was occupied by Imperial Japan. In 1910, Tokyo formally annexed the entire Peninsula. Korea regained its independence following Japan's surrender to the US and its allies in 1945. After World War II, a democratic government (Republic of Korea, ROK) was set up in the southern half of the Korean Peninsula while a communist-style government was installed in the north (North Korea; aka Democratic People's Republic of Korea, DPRK). During the Korean War (1950-53), US troops and UN forces fought alongside ROK soldiers to defend South Korea from a North Korean invasion supported by communist China and the Soviet Union. A 1953 armistice split the Peninsula along a demilitarized zone at about the 38th parallel.
Syngman RHEE led the country as its first president from 1948-1960. PARK Chung-hee took over leadership of the country in a 1961 coup. During his regime from 1961 to 1979, South Korea achieved rapid economic growth, with per capita income rising to roughly 17 times the level of North Korea in 1979. PARK was assassinated in 1979, and subsequent years were marked by political turmoil and continued authoritarian rule as the country's pro-democracy movement grew. South Korea held its first free presidential election under a revised democratic constitution in 1987, with former South Korean Army general ROH Tae-woo winning a close race. In 1993, KIM Young-sam (1993-98) became the first civilian president of South Korea's new democratic era. President KIM Dae-jung (1998-2003) won the Nobel Peace Prize in 2000 for his contributions to South Korean democracy and his "Sunshine Policy" of engagement with North Korea. President PARK Geun-hye, daughter of former South Korean President PARK Chung-hee, took office in February 2013 as South Korea's first female leader. In December 2016, the National Assembly passed an impeachment motion against President PARK over her alleged involvement in a corruption and influence-peddling scandal, immediately suspending her presidential authorities. The impeachment was upheld in March 2017, triggering an early presidential election in May 2017 won by MOON Jae-in. In March 2022, longtime prosecutor and political newcomer YOON Suk Yeol won the presidency by the slimmest margin in South Korean history.
Discord and tensions with North Korea, punctuated by North Korean military provocations, missile launches, and nuclear tests, have permeated inter-Korean relations for years. Despite a period of respite in 2018-2019 ushered in by North Korea's participation in the 2018 Winter Olympic and Paralympic Games in South Korea and high-level diplomatic meetings, including historic US-North Korea summits, relations were strained as of early 2024. In 2024, Pyongyang announced it was ending all economic cooperation with South Korea, a move that followed earlier proclamations that it was scrapping a military pact signed in 2018 aimed at de-escalating tensions along their militarized border, abandoning the country’s decades-long pursuit of peaceful unification with South Korea, and designating the South as North Korea’s “principal enemy.”
9 provinces (do, singular and plural), 6 metropolitan cities (gwangyeoksi, singular and plural), 1 special city (teugbyeolsi), and 1 special self-governing city (teukbyeoljachisi)
provinces: Chungcheongbuk-do (North Chungcheong), Chungcheongnam-do (South Chungcheong), Gangwon-do, Gyeongsangbuk-do (North Gyeongsang), Gyeonggi-do, Gyeongsangnam-do (South Gyeongsang), Jeju-do (Jeju), Jeollabuk-do (North Jeolla), Jeollanam-do (South Jeolla)
metropolitan cities: Busan (Pusan), Daegu (Taegu), Daejeon (Taejon), Gwangju (Kwangju), Incheon (Inch'on), Ulsan
special city: Seoul
special self-governing city: Sejong
South Korea-Japan: South Korea and Japan claim Liancourt Rocks (Tok-do/Take-shima), occupied by South Korea since 1954
South Korea-North Korea: Military Demarcation Line within the 4-km-wide Demilitarized Zone has separated North from South Korea since 1953; periodic incidents with North Korea in the Yellow Sea over the Northern Limit Line, which South Korea claims as a maritime boundary
precursor chemicals used for illicit drugs, such as acetic anhydride, pseudoephedrine, and ephedrine, imported from the United States, Japan, India, and China and then either resold within South Korea or smuggled into other countries