여말선초 압록강 중상류 영토의 재검토

Abstract

Existing studies present the territory of the late Goryeo dynasty as a line that connects Chosan, Ganggye, Jangjin, and Gapju (Gapsan). In addition, these studies do not examine specific spaces of the middle and upper Yalu River before the full-scale development of the four guns. However, diversions in the historical past have produced diverging interpretations of Goryeosa and Odoyanggyedo geographies. Even before the development of the four guns in the King Sejong period, Goryeo had actively occupied the middle and upper Yalu River in the King Taejo and Taejong periods, even though the specific patterns of this exploration remain unknown. The present study differs from previous studies and applies new applied methods to understand the middle and upper areas of the Yalu River from the late Goryeo dynasty to the early Joseon dynasty and its expansion process. The findings suggest that Joseon owned the Gapju (Gapsan) areas of Gasadong, Sohundu, Yeoyeon, (Ji)ryeonggoe, and Ira in the region off the middle and upper Yalu River in the King Taejong period. In other words, Joseon may have secured its national border along the Yalu River despite the territory’s loosely drawn boundaries. Because Gapsan is expanded through these contexts, the western part of Sohundu was split off in 1417 to become Yeoyeon-gun, which later served as the grounds for installing the four guns.