Proto-Korean language
The proto-Korean language is a reconstructed pre-form of the Korean language . It was spoken in the Bronze and Iron Ages .
By the time the Three Kingdoms of Korea were formed, Proto-Korean had already evolved into Old Korean .
Individual evidence
- ↑ 최기호, 국어사 서설 "The History of the Korean Language", 제 8 회 국외 한국어 교사 연수회 "8th Research Conference of Korean Language Teachers Abroad", 2004