고려의 보주(保州) 확보와 그 의미

Abstract

Boju was located in the lower part of the Amnokgang, and was a key point to be used as a transportation route to the mainland of China and the excavation area as well as the Korean Peninsula and the Liaodong area. Boju, which had been dispatched by a large number of provincial armies, occupied an important position in the Koryo period, which was constantly contested with China. Since the Boju area is located at the border gateway, it was not only politically and militarily important, but also a place where it could take advantage of brokerage trade through economic exchange. The intention of establishing a chapter in the Boju area came from the intent of taking economic gain as a means of checking the concerns that resumed the relationship with Song. However, Koryo was intended to prevent the expansion of the Liao forces in the east of the Amnokgang. Boju was the first target of attack when there was an external invasion and could be used as a channel for the invading army at the moment. Koryo was trying to prevent anything that could become a sprout of the conflict with Liao. The time when Koryo was able to assert its sovereignty over the Boju area was the replacement of Liao and Jin. Koryo was able to acquire the Boju area, which is a strategic economic and military center, through diplomatic methods. Jin demanded Pledge. Koryo accepted this and obtained Boju. Koryo, even after restoring Boju from Jin, dispatched Bundo army, Doryung, Jungnangjang and Nangjang to the area. It was because it was an important area that became the gateway between the two countries. In particular, Byeongmasa allowed Yanggyae to defend and installed bundo at the same time. It was a dual system. They were able to form their own forces. In particular, Han Shun and Da Ji, who were the officers of the provincial government, rebelled against the ruling of the central government. In this period, local officials flattered the militant regime and deprived the people, or opposed the central government. After securing the Boju, they deployed military forces to effectively rule the region. but rather they formed their own forces.