지금 네 나라가 서로 자기 역사라 우기는 나라/발해 처음부터 끝까지

Haedongseongguk, a prosperous nation east of the sea. There once existed a country that ruled over Manchuria and the Maritime Provinces for over two hundred years, strong enough to strike first against the world's most powerful Tang Dynasty. Yet, this colossal nation left behind not a single history book of its own making. Not even the names of its kings have been preserved intact. This video follows the history of that erased nation, Balhae, from beginning to end in a single narrative flow. It explores how Dae Jo-yeong rebuilt the country from the ashes left by the collapse of Goguryeo, how it grew powerful enough to be called Haedongseongguk, and why it crumbled so suddenly. It also examines to whom those erased voices were eventually passed down. Topics Covered: Sanggyeong Fortress and the tombs of the two princesses; the Rebellion of Li Jinzhong and the Battle of Cheonmunryeong; the founding of the state in 698; King Mu's surprise attack on Dengzhou; King Mun's relocation of the capital to Sanggyeong and the reorganization of the system; Balhae's independent era names and pride as an imperial state; the former king and the "Flourishing State of the East"; a culture blending Goguryeo and Tang influences; maritime trade with Japan; the fall of the Khitan in 926 and its mysteries; the truth behind the theory that Mount Baekdu was a volcano; the Jeonganguk restoration movement; Dae Gwang-hyeon and the exile of Balhae refugees to Goryeo; Yu Deuk-gong's Balhaego and the theory of the Northern and Southern States period; and even the ongoing disputes over historical attribution. Educational Value: This book organizes the history of a nation with almost no self-records based on verified facts, distinguishing between artifacts and the historical records of neighboring countries. Folklore not accepted by academia, such as the theory that Mount Baekdu was destroyed by a volcano, has been corrected with supporting evidence, while ongoing debates regarding Balhae's historical attribution are presented based on surviving evidence. *Educational Value:* This book organizes the history of a nation with almost no self-records by focusing on verified facts, distinguishing between artifacts and the historical records of neighboring countries. YouTube Guidelines / Disclaimer This video was produced for educational purposes based on artifacts, excavation data from national institutions and museums, and historical records from neighboring countries. Topics such as the origins of Dae Jo-yeong, the ethnic composition of Balhae’s inhabitants, the attribution of Balhae’s history, and the causes of its rapid demise are subjects that are still debated in academia today; this video presents the findings based on remaining evidence without making definitive conclusions. The text states that the popular belief that the eruption of Mount Baekdu caused the downfall of Balhae is not accepted by the academic community due to chronological discrepancies. Unverified and exaggerated territorial claims have not been addressed. For those requiring accurate citations, please search for and verify the names of figures, sites, and dates mentioned in the video yourself. This video is not intended to target any specific country or group, and artificial intelligence tools were used in the production process. YouTube Guidelines / Disclaimer This video was produced for educational purposes. References New Book of Tang, Biography of Balhae, 1060 Old Book of Tang, Biography of Balhae and the Malgal, 945 Yu Deuk-gong, *History of Balhae*, 1784 National Institute of Korean History, Our History Net, Balhae entry in Korean History Academy of Korean Studies, Encyclopedia of Korean Culture — Balhae, King Go Dae Jo-yeong, Battle of Cheonmunryeong, Haedongseongguk, Tomb of Princess Jeonghyo, Tomb of Princess Jeonghye, Jeonganguk, Balhae Restoration Movement entries Inscription on the Tombstone of Princess Jeonghyo #Balhae #BalhaeHistory #KoreanHistory #AncientHistory #DaeJoYeong #Haedongseongguk #NorthernAndSouthStatesPeriod #GoguryeoSuccession #NortheastProject #TombOfPrincessJeonghyo #BattleOfCheonmunryeong #HistoryInstinct