The Korean language is attested from the early centuries of the Common Era, in the Chinese script.Syllabic hangul script is only introduced in the middle Korean period in the 15th century.
Contriversy remains over the classification of Korean as Altaic. While majority of linguist consider Korean to be a language isolate, there have been attempts to link it with other languages in the region. Since the article of Ramstedt, some lingust support the hypothese that Korean can be classified as Altic.
Old Korean corresponds to the Korean language from the beginning of three kindoms period to the later part of The unified Silla period approximately from the 1st to the 10th century. Old Korean may have been a tanal language, its unclear. It is also assumed that ald Korean was divided into dialects corresponding to the three kingdoms. These hypothetical subdivisions of old Korean are also know as Buyeo languages. The silla language is the best attested due to the political domination of unified silla by the 7th century.
Middle Korean corresponds to korean spoken from the 10th to the 16th centurries, or from the era of Gorueo to the middle of Josean. The language standard of this period is based on the dialext of Gaeseong because the new Goryea Dynasty moved its capital city to the north area of the korean peninsula. Gyerim Ryusa, a collection of several hundred items of koreans vocabulary with the pronunication indicated throught the use of chinese characters.
Mondern korean corresponds to the korean spoken from the 17th century onward. North and south Dirrerences in forean have developed, including variance in pronunication, verd inflection and vocabulary over the decades following the korean war and the division of Korea.