South Korea's main language is from 1443.
The Korean alphabet , known as Hangul in South Korea ( also transcribed Hangeul ) and as Chosŏn ` gŭl / Chosŏn Muntcha in North Korea is the alphabet that has been used to write the Korean language since the 15th century . It was created in 1443 under King Sejong the Great during the Joseon Dynasty . South Korea . Hangul enabled anyone in the general Korean population to easily learn to read and write and transfer written information rather than spending years learning complicated ancient Chinese .