 Complete the following phrase:  In 757, Gyeongdeok of Silla classified the island as Geoje-gun  Geoje county. Modern Geoje is classified as a si  city. In 1170, Uijong of Goryeo secretly escaped to Geoje when Jeong Jung-bu raised a rebellion against him, instating his brother, Myeongjong as king. Geoje served as a strategic location in preparation of the naval forces for the Gihae Eastern Expedition  of Tsushima Island in 1419 by the Korean general Yi Jong Mu. At the time of the 