Pedzisa mutsara unotevera: Pakupera kwezana ramakore rechi9, Silla yakakamurwa kuva Humambo Hwevatatu Hwekupedzisira (892<unk>936), hwakaguma nekubatanidzwa neimba yaGoryeo yaWang Geon. Zvichakadaro, Balhae yakawa mushure mekupinda neKhitan Liao dzinza uye vapoteri kusanganisira wekupedzisira korona muchinda vakatamira kuGoryeo, uko korona muchinda akagamuchirwa noushamwari uye akaverengerwa mumhuri inotonga naWang Geon, nekudaro achibatanidza nyika mbiri dzinomutevera dzeGoguryeo. Munguva yaGoryeo, mitemo yakanyorwa, hurongwa hwevashandi vehurumende hwakatangwa, uye tsika yaikurudzirwa nechiBuddha yakabudirira. Zvisinei,
Kupinda kwevaMongol muzana remakore rechi13 kwakaita kuti Goryeo ive pasi pesimba ravo kusvikira pakati pezana remakore rechi14.