Korea (/kəˈriːə/ kə-REE-ə; Korean: 한국 Hanguk [hanɡuːk] or 조선 Joseon [tɕosʌn] – (see etymology) is an East Asian region that is divided into two separate sovereign states — North Korea and South Korea. Located on the Korean Peninsula, Korea is bordered by China to the northwest, Russia to the northeast, and is separated from Japan to the east by the Korea Strait and the Sea of Japan (East Sea), and separated from Taiwan to the south by the East China Sea.
Archaeological and linguistic evidence suggest the origins of the Korean people might have been Altaic language-speaking people from south-central Siberia,[dubious – discuss] who populated ancient Korea in successive waves from the Neolithic age to the Bronze Age. The adoption of the Chinese writing system ("Hanja" in Korean) in the 2nd century BC, and Buddhism in the 4th century AD, had profound effects on the Three Kingdoms of Korea.
The Three Kingdoms of Korea was first united during the Silla dynasty under the king Munmu of Silla. The united Silla dynasty fell to Goryeo Dynasty in 935 at the end of Later Three Kingdoms of Korea era. Goryeo was a highly cultural state and created the Jikji in the 14th century, using the world's first movable metal type printing press. The Mongol invasions in the 13th century, however, greatly weakened the nation which was forced to become a tributary state. After the Mongol Empire's collapse, severe political strife followed and Goryeo was replaced by the Joseon Dynasty in 1388.
The Korean War (Korean: 한국전쟁 or 조선전쟁, Hanja: 韓國戰爭 or 朝鮮戰爭; 25 June 1950 – 27 July 1953) was a war between the Republic of Korea (supported primarily by the United States of America, with contributions from allied nations under the aegis of the United Nations) and the Democratic People's Republic of Korea (supported by the People's Republic of China, with military and material aid from the Union of Soviet Socialist Republics). The Korean War was primarily the result of the political division of Korea by an agreement of the victorious Allies at the conclusion of the Pacific War at the end of World War II. The Korean Peninsula was ruled by the Empire of Japan from 1910 until the end of World War II. Following the surrender of the Empire of Japan in September 1945, American administrators divided the peninsula along the 38th parallel, with U.S. military forces occupying the southern half and Soviet military forces occupying the northern half.
Kim Jong-il (born Yuri Irsenovich Kim; 16 February 1941; official biography claims 1942 – 17 December 2011) was the supreme leader of North Korea (DPRK) from 1994 to 2011. He succeeded his father and founder of the DPRK Kim Il-sung following the elder Kim's death in 1994. Kim Jong-il was the General Secretary of the Workers' Party of Korea, Chairman of the National Defence Commission of North Korea, and the supreme commander of the Korean People's Army, the fourth-largest standing army in the world.
In April 2009, North Korea's constitution was amended to refer to him as the "supreme leader". He was also referred to as the "Dear Leader", "our Father", and "the General", among others. His son Kim Jong-un was promoted to a senior position in the ruling Workers' Party and is his successor. In 2010, he was ranked 31st in Forbes Magazine's List of The World's Most Powerful People. The North Korean government announced his death on 19 December 2011.
Following his demise, he was succeeded by his third son Kim Jong-un. He was proclaimed the Eternal General Secretary of the Workers' Party of Korea and Eternal Chairman of the National Defence Commission in 2012. His birthday is a public holiday in the country.