Who was Yi Seong-gye?

Who was Yi Seong-gye? 이성계는 누구인가요? The Rough Guide to Seoul 2019 Cover Errors in detail After a series of short-lived kings, powerful Joseon General Yi Seong-gye decided to take the mantle himself, and in 1392 declared himself King Taejo, the first leader of the Joseon...