Original sentence: After its defeat, it was later divided between the Tang Dynasty, Unified Silla and Balhae; some of the territory might have also been taken by the Khitan, still in tribal form at this point.Both North and South Korea consider Goguryeo as an important ancestral kingdom and helped forge Korean history, culture and ethnic identity.Goguryeo was a powerful kingdom that was an active participant in the power struggle between the Three Kingdoms of Korea as well as the foreign affairs of associated Chinese kingdoms.Goguryeo was an ancient kingdom located in the northern Korean Peninsula and southern Manchuria.It is one of the Three Kingdoms of Korea, along with Baekje and Silla.It was a major regional power of East Asia until it was defeated by a Silla-Tang alliance in 668 CE.Other small states in the former Gojoseon territory included Buyeo, Okjeo and Dongye, all of which were later conquered by Goguryeo.Recent controversial claims on Goguryeo and its historic legacy by the People's Republic of China through their Northeast Project has sparked diplomatic disputes with South Korea...The Chinese claims, however are widely rejected, and accused of being "ideologically driven".The Samguk Sagi, a Goryeo text, indicate that Goguryeo was founded in 37 BCE by Jumong, a prince from Buyeo, although there is archaeological evidence that suggests Goguryeo culture was in existence since the 2nd century BCE around the fall of Gojoseon
Edited sentence: Gaogouli was a Chinese tributary state.Gaougouli was an ancient Chinese kingdom located in the northern Korean Peninsula and Northeast China.Many modern historians agree with China's claim on Gaogouli