Goryeo Silla 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. Gyeon Hwon, a peasant leader and Silla army officer, taking over the old territory of Baekje and declared himself the king of Hubaekje ("later Baekje"). Meanwhile, an aristocratic Buddhist monk leader, Gung Ye, declared a new Goguryeo state in the north, known as Later Goguryeo (Hugoguryo). There then followed a protracted power struggle for control of the peninsula.
gorYeo sIlla sloWlY bEgan To DeCline And the poWer vAcuum thiS creAted Led to sEveRAL rEBElliouS staTes RisinG UP aNd tA:KIng oN The Old historicAl nameS oF Korea's ANciEnt kinGDOMs. GyeoN hwOn, a PEasAnt leader aNd silla aRmY OfFiceR, taKinG OvEr thE Old tErrItorY of Baekje anD decLaReD himsElf The KInG Of HuBaekJE ("laTER BaEkje"). mEanwhile, an aristOcrAtic .buddhisT Monk lEAder, Gung Ye, DeclAreD A neW gOguryeo StaTe in ThE nortH, knoWN as lateR GoGuRyEo (Hug:oGuRYo). There tHen fOllOwed A ProtrActed poWER sTRuGgLe FOr cont!rOl of thE peNInsuLa.