|-||Established||2nd century BC|
Buyeo or Puyŏ (Korean pronunciation: [pujʌ]), Fuyu in Chinese, was an ancient Korean kingdom located from today's Manchuria to northern North Korea, from around the 2nd century BC to 494. Its remnants were absorbed by the neighboring and brotherhood kingdom of Goguryeo in 494. Both Goguryeo and Baekje, two of the Three Kingdoms of Korea, considered themselves its successor nation.
Although records are sparse and contradictory, it is speculated that in 86 BCE, Dongbuyeo (Eastern Buyeo) branched out, after which the original Buyeo is sometimes referred to as Bukbuyeo (Northern Buyeo). Jolbon Buyeo was a small tribal state situated in north of the Korean peninsula and Manchuria. According to Samguk Sagi, in 504, the tribute emissary Yesilbu mentions that the gold of Buyeo can no longer be obtainable for tribute as Buyeo has been driven out by the Malgal and the Somna and absorbed into Baekje. It is also shown that the Emperor Shizong wished that Buyeo would regain its former glory. In 538, long after the fall of Buyeo, Baekje renamed itself Nambuyeo (Southern Buyeo).
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Early history 
The founder of Buyeo kingdom was probably Dongmyeong, having no relations with Jumong who founded Goguryeo. After its foundation, Hae Mosu (解慕漱：the son of heaven) brought the royal court to his new palace, and they proclaimed him King. Hae Mosu called his new kingdom "Buyeo" to show that he was the true successor to the Kings of Buyeo. Generally, This Buyeo is often known as "Bukbuyeo" (Northern Buyeo).
Under attack 
In early 3rd century, Gongsun Du, a Chinese warlord in Liaodong, supported Buyeo to counter Xianbei in the north and Goguryeo in the east. After destroying the Gongsun family, the northern Chinese state of Cao Wei sent Guanqiu Jian to attack Goguryeo. A squad of the expeditionary force led by Wang Qi (王頎), the Grand Administrator of the Xuantu commandery, was welcomed by Buyeo. It brought detailed information of the kingdom to China.
After that, Buyeo was torn between big powers, and ravaged during the waves of movement of northern nomadic peoples into China. In 285 the Murong tribe of the Xianbei, led by Murong Hui, invaded Buyeo, pushing King Uiryeo (依慮) to suicide, and forcing the relocation of the court to Okjeo. Considering its friendly relationship with Jin Dynasty, Emperor Wu helped King Uira (依羅) revive Buyeo.
Goguryeo's attack sometime before 347 caused further decline. Having lost its stronghold near Harbin, Buyeo moved southwestward to Nong'an. Around 347, Buyeo was attacked by Murong Huang of the Former Yan, and King Hyeon (玄) was captured.
A remnant of Buyeo seems to have lingered around modern Harbin area under the influence of Goguryeo. Buyeo paid tribute once to Northern Wei in 457, but otherwise seems to have been controlled by Goguryeo. In 494, Buyeo were under attack by the rising Wuji (also known as the Mohe, 勿吉, 물길), and the Buyeo court moved and surrendered to Goguryeo.
According to the Samguk Sagi and other accounts, the kingdom of Dongbuyeo (86 BCE – 22 CE) branched out to the east of Bukbuyeo, near the land of Okjeo. Bukbuyeo's King died, and his brother Hae Buru succeeded him and became the king of Bukbuyeo.
Hae Buru found a golden frog-like child under a large rock. Hae Buru named the child Geumwa, meaning golden frog, and later made him crown prince.
Geumwa became king after Hae Buru's death. Geumwa met Yuhwa, the daughter of Habaek, and brought her back to his palace. She was said to have been impregnated by sunlight and to have laid a golden egg. Geumwa made many attempts to destroy the egg, but failed, and returned the egg to Yuhwa. From the egg hatched Jumong, who later founded the kingdom of Goguryeo. Jumong later fled to Jolbon Buyeo after numerous assassination attempts by the seven sons of King Geumwa.
Geumwa's eldest son Daeso became the next king. Daeso attacked Goguryeo during the reign of its second King Yuri. Goguryeo's third king Daemusin attacked Dongbuyeo and killed Daeso. After internal strife, Dongbuyeo fell, and its territory was absorbed into Goguryeo.
Contrarily, Gwanggaeto stele mentioned Dongbuyeo as a vassal state of Goguryeo, even long after its destruction. Since the chronology is inconsistent with the Samguk Sagi, the Dongbuyeo mentioned in the stele is widely speculated by historians to have been a revival movement of Dongbuyeo, formed around 285.
Jolbon Buyeo 
Many ancient historical records indicate the "Jolbon Buyeo" (卒本夫餘, 졸본부여), apparently referring to the incipient Goguryeo or its capital city.
The Buyeo were agricultural people who occupied the vastest plain in Manchuria. Their manners and customs were mostly recorded in Sanguo Zhi (Records of Three Kingdoms), ancient Chinese historical text. They already maintained a complex social structure and named official titled after animals.
The Buyeo languages are a hypothetical language family that would relate the language of Buyeo with the languages of Goguryeo and Baekje, and possibly place them together as a family under the hypothetical Altaic family. However, the hypothetical is unverified and thought unproven. According to Chinese history records, language of Buyeo is similar with that of Goguryeo, but their languages is completely different from Malgal.
In the 1930s, Chinese historian Jin Yufu developed a linear model of descent for the people of Manchuria and northern Korea, from the kingdoms of Buyeo, Goguryeo, and Baekje, to the present Korean nationality. Later historians of Northeast China built upon this influential model. However, Chinese histories, both ancient and modern, always tend to minimize the accomplishments/contributions of surrounding 'Barbarian' kingdoms. This can be seen in modern Manchuria, where archaeological sites that involve activities by Goguryeo are closed to access by Korean scholars, in the same way that 4th-6th Iron-age 'Imperial' tombs in Japan, that would settle the question of the impact of Baekje on early Japanese history, are closed to excavation.
Goguryeo and Baekje, two of the Three Kingdoms of Korea, considered themselves successors of Buyeo. King Onjo, the founder of Baekje, is said to have been a son of King Dongmyeongseong, founder of Goguryeo. Baekje officially changed its name to Nambuyeo (남부여, 南夫餘 "South Buyeo") in 538.
See also 
- Warren I. Cohen (2000) East Asia at the Center: Four Thousand Years of Engagement With the World. Columbia University Press.
- Ikeuchi, Hiroshi. "The Chinese Expeditions to Manchuria under the Wei dynasty," Memoirs of the Research Department of the Toyo Bunko 4 (1929): 71-119. p. 109
- 人形似夫餘, 言語不與夫餘句麗同. <三国志>
- 挹婁, 古肅愼之國也. 在夫餘東北千餘里, 東濱大海, 南與北沃沮接, 不知其北所極. 土地多山險. 人形似夫餘, 而言語各異. <後漢書>
- 勿吉國在高句麗北, 舊肅愼國也. ... 言語獨異.<魏書>
- 勿吉國在高句麗北, 一曰靺鞨. 言語獨異.<北史>
- Encyclopædia Britannica
- The origin of the Proto-Bulgarians: Korea's Bu-Yeo Tribe (부여족)