Korea is a peninsula, civilization, and a former state situated on the Korean Peninsula in East Asia. Korea is currently divided into North Korea and South Korea.
The history of Korea began with the legendary founding of Gojoseon in 2333 BC by Dangun. Limited linguistic evidence suggests probable Altaic origins of these people, whose northern Mongolian Steppe culture absorbed immigrants from northern Manchuria, Mongolia and China. 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. Koreans later passed on these, as well as their own advances, to Japan.
In 1945, the Soviet Union and the United States agreed on the surrender and disarming of Japanese troops in Korea; the Soviet Union accepting the surrender north of the 38th parallel and the United States taking the surrender south of it. This led to division of Korea by the two great powers, exacerbated by their inability to agree on the terms of Korean independence. The two Cold War rivals then established governments sympathetic to their own ideologies, leading to Korea's current division into two political entities: North Korea and South Korea.

Korean is the official language of both North and South Korea, and of Yanbian Autonomous Prefecture in China. It is also spoken widely in various Korean communities throughout. Worldwide, there are around 80 million Korean speakers, including large groups in the former Soviet Union, China, Australia, the United States, Canada, Brazil, Japan, and more recently, the Philippines.
The genealogical classification of Korean is debated. Some linguists place it in the Altaic language family; others consider it to be a language isolate. Korean is agglutinative in its morphology and SOV in its syntax. Like Japanese and Vietnamese, Korean has borrowed much vocabulary from the genetically unrelated Chinese or created vocabulary on Chinese models.
Modern Korean is written almost exclusively in the Hangul script, which was invented in the 15th century. While Hangul may appear logographic, it is actually a phonemic alphabet organized into syllabic blocks. Each block consists of at least two of the 24 Hangul letters (jamo): at least one each of the 14 consonants and 10 vowels. Historically, the alphabet had several additional letters. Hanja (Chinese characters) and Roman characters are sometimes included within hangul texts, particularly in South Korea.