The Three Kingdoms of Korea include Goryeo which later became Gogureyo in 1897.
 After the Unified Silla kingdom had ruled Korea alone from 668 AD, it slowly began to decline and the power vacuum this created led to several rebellious states rising up and taking on the old historical names of Korea's ancient kingdoms
 By 900 AD Gyeon became more ambitious and, joining forces with the bandit Yanggil, formed a revival of the old Baekje (Paekche) kingdom in the south-west portion of the peninsula

