後百濟의 加耶故地 進出에 관한 檢討

A Review of Later Paekche’s(後百濟) Expedition to Ancient Kaya(加耶) Territory

Later Silla(統一新羅) was tom into pieces by rebel leaders like Kung Ye(弓裔) and Chin Hwon(甄萱). Kung Ye was proclaimed in most of central-north area, Chin Hwon, on the other hand, occupied southwestern area. But overthrowing Kung Ye, Wang Kon(王建), the last rebel leader, found Koryo(高麗) dynasty in 918. He sought and received support of land lords and merchants whose economic as well as political power overwhelmed Later Silla government which was still proclaimed in south east areas as her territory. In re-unifying korean peninsula, Kaya was regarded by Wang Kon and Chin Hwon as a important area for keeping political power balance. So that Later Paekche and Koryo maintained a peaceful relationship each other in this area for around 7~8 years. With securing a bridgehead by obtaining Jinryesong(進禮城) in Kaya area. Later Paekche was able to make expedition to Chomusong(曹物城) in 924 and 925. Therefore, two countries were firstly made a frontal crash so that the territories of Silla and Kaya were become a battlefield. During a peaceful period, Wang Bong-Kyu(王逢規) had developed his political power in Uiryung, Kyungnam province and occupied Kangjoo(康州), but he was destroyed by Koryo. Then Kangjoo was become a competition area between Later Paekche and Koryo. Finally, Later Paekche occupied Kangjoo, May 927. It was evidenced by Paochen reign-title(寶正, 926~931) which was inscripted on roof tile. This was uncovered in near Uiam(義巖) in front of Choksokru(矗石樓), Jinjoo(晋州). It means that Kangjoo was a territory of the Later Paekche until her collapse in 936. Later Paekche used a reign- title by herself from 901 to 910 and later she adopted that of Wu-Yueh(吳越). According to historical document, after the year of 928 the relationship between Later Paekche and Wu-Yueh were no more continued. However, the discovery of Paochen reign-title indicated that the diplomatic relationships of two countries were continued. After a political coup of Shin Gom(神劒), Later Paekche used Chingtai reign-title of Hou Tang(後唐). Koryo abolished her reign-title of Chunsu(天授) and adopted Changhsing(長興) reign-title of Hou Tang. The adoption of Chinese dynasty’s reign-title by Later Paekche and Koryo means that the influence of Chinese dynasties was very strong in political competition between these two countries. In closing discussion, I tried to suggest the periodic stages of Chin Hwon’s regime and clarified the existence of a peaceful time through the separation policy by Wang Kon. I analyzed that Later Paekche attempted to make a expedition to Kaya and had a relationship with Japanese archipelago for an economic purpose. And I tried to explain the process of occupation of Kangjoo and the process of use of reign-title in Later Paekche. The rise and fall of Chin Hwon’s regime would be explained as four periodic stages like the era(889~900) of state preparation, the era (900~918) of the revival of Former Paekche, the era(918-925) of Three state, and the era(925~936) of warfare for unification.