Goryeo

Goryeo (; ) was a Korean state founded in 918, during a time of national division called the Later Three Kingdoms period, that unified and ruled the Korean Peninsula until the establishment of Joseon in 1392. Goryeo achieved what has been called a "true national unification" by Korean historians as it not only unified the Later Three Kingdoms but also incorporated much of the ruling class of the northern kingdom of Balhae, who had origins in Goguryeo of the earlier Three Kingdoms of Korea. According to Korean historians, it was during the Goryeo period that the individual identities of Gogurye

Goryeosa (), or History of Goryeo, is an extensive historical record of the Goryeo dynasty, compiled by the officials of Goryeo's successor state, Joseon. Its compilation started during the reign of Taejo (the founding monarch of Joseon), was completed under Munjong, and was first printed under Danjong. Goryeosa consists of 139 volumes and stylistically follows Chinese historiography () (cf. chronicle, ) where sections are organized by their purpose. The section compiling the annals of the kings, sega () narrates the history of Goryeo kings. The monograph section, ji (), contains "accounts of

period of Goryeo/Korean vassalage to the Mongol-Chinese Yuán dynasty

yuan dynasty prefectures in the Korean Peninsula

Korean art museum in Kyoto Prefecture, Japan

13th to 14th century Yuan administrative division in Korea