Goguryeo also later known as Goryeo, was a Korean kingdom which was located on the northern and central parts of the Korean Peninsula and the southern and central parts of modern-day Northeast China (Manchuria). At its peak of power, Goguryeo conquered most of the Korean Peninsula and large parts of Manchuria, along with parts of eastern Mongolia, Inner Mongolia, and modern-day Russia.
The Three Kingdoms of Korea or Samguk competed for hegemony over the Korean Peninsula during the ancient period of Korean history. During the Three Kingdoms period, many states and statelets consolidated until, after Buyeo was annexed in 494 and Gaya was annexed in 562, only three remained on the Korean Peninsula: Goguryeo, Baekje and Silla. The "Korean Three Kingdoms" contributed to what would become Korea; and the Goguryeo, Baekje and Silla peoples became the Korean people.
Geunchogo of Baekje, Chogo II of Baekje was the 13th king of Baekje, one of the Three Kingdoms of Korea. He reigned over the apex of Baekje's powers.
Jinpyeong was the 26th king of the Silla dynasty, one of the Three Kingdoms of Korea. King Jinpyeong followed in the footsteps of his predecessor, King Jinji, by reorganizing the central ruling system of Silla. Upon the onset of a multitude of conflicts between Baekje and Goguryeo, he sent emissaries to improve relations and strengthen ties between Silla and the Chinese dynasties Sui and Tang. He is also known for his promotion of Buddhism as a spiritual guide for the kingdom and encouraging Buddhist teachings. His 54 year long reign is the longest in Silla's history.
Yangwon of Goguryeo (538~559) was the 24th ruler of Goguryeo, the northernmost of the Three Kingdoms of Korea. He was the eldest son of Anwon of Goguryeo. During Yangwon's reign, Goguryeo gradually grew weaker and was obliged to take various urgent measures to block foreign invasions, eventually losing the Seoul region to the alliance of the other two Korean kingdoms.
Gungnaeseong or Guonei was the capital of the ancient Korean kingdom of Goguryeo, which was located in Manchuria and the Korean Peninsula. The perimeter of its outer fortress measures 2,686m. It is located in present day Ji'an city, Jilin province, northeast China. Because of its historical importance and exceptional architecture, Gungnae was designated as a UNESCO World Heritage Site in 2004. It is part of the Capital Cities and Tombs of the Ancient Koguryo Kingdom World Heritage Site, together with nearby Hwando Mountain City and the Onyeosan City, in modern northeast China.
The Battle of Salsu was a major battle that occurred in the year 612 during the second campaign of the Goguryeo–Sui War between Goguryeo of Korea and Sui of China. Goguryeo won an overwhelming victory over the numerically superior Sui forces at Salsu River.
The Goguryeo–Sui War were a series of invasions launched by the Sui dynasty of China against Goguryeo, one of the Three Kingdoms of Korea, between AD 598 and AD 614. It resulted in the defeat of the Sui and was one of the pivotal factors in the collapse of the dynasty, which led to its overthrow by the Tang dynasty in AD 618.
The military history of Goguryeo involves wars with other Korean kingdoms, Chinese dynasties, nomadic states and tribes, and Wa Japan. Goguryeo was a highly militaristic state; it was a powerful empire and one of the great powers in East Asia, until it was defeated by a Silla–Tang alliance in 668 after prolonged exhaustion and internal strife caused by the death of Yeon Gaesomun.
Ji'an is a county-level city in the southwestern part of Jilin province, People's Republic of China. It is administered by the prefecture-level city of Tonghua and is the southernmost county-level division in the province. Ji'an has an area of 3,408 km2 (1,316 sq mi) and a population of approximately 230,000. The city was given its current status in 1988. Ji'an is separated from Manpo, Chagang Province, North Korea by the Yalu River; it has an international border running 203.5 km (126.4 mi).
The Northeast Project, which is short for the Serial Research Project on the History and Current State of the Northeast Borderland, was a five-year research project on the history and current situation of the frontiers of Northeast China which lasted from 2002 to 2007. It was launched by the Chinese Academy of Social Science (CASS) and received financial support from both the Chinese government and the CASS.
The Capital Cities and Tombs of the Ancient Koguryo Kingdom is an UNESCO World Heritage Site which includes a number of archaeological sites currently in Ji'an, Jilin Province and Huanren, Liaoning Province in Northeast China. Goguryeo, was a Korean Kingdom located in the northern and central parts of the Korean Peninsula and the southern and central parts of Manchuria.
The Goguryeo–Tang War occurred from 645 to 668 and was fought between Goguryeo and the Tang dynasty. During the course of the war, the two sides allied with various other states. Goguryeo successfully repulsed the invading Tang armies during the first Tang invasions of 645–648. After conquering Baekje in 660, Tang and Silla armies invaded Goguryeo from the north and south in 661, but were forced to withdraw in 662. In 666, Yeon Gaesomun died and Goguryeo became plagued by violent dissension, numerous defections, and widespread demoralization. The Tang–Silla alliance mounted a fresh invasion in the following year, aided by the defector Yeon Namsaeng. In late 668, exhausted from numerous military attacks and suffering from internal political chaos, Goguryeo and the remnants of Baekje army succumbed to the numerically superior armies of the Tang dynasty and Silla.
The first conflict of the Goguryeo–Tang War started when Emperor Taizong of the Tang dynasty led a military campaign against Goguryeo in 645 to protect Silla and punish Generalissimo Yeon Gaesomun for the killing of King Yeongnyu. The Tang forces were commanded by Emperor Taizong himself, and generals Li Shiji, Li Daozong, and Zhangsun Wuji.
Hwando is a mountain fortress of the ancient Korean kingdom of Goguryeo, built to protect Goguryeo's second capital, Gungnae. It is located in present-day Ji'an city of the province of Jilin, China.
Ansi City, also known as Ansi Fortress, was a Goguryeo fortified city in present-day Liaoning province, China. The city was founded in early 4th century after Goguryeo conquered the area, and received its name from a Han dynasty prefecture of the same name. The ruins of the city are identified with a site at Yingchengzi (营城子), 7.5 kilometres (4.7 mi) to the southeast of Haicheng. Ansi was a major city of the Goguryeo and the scene of a major siege and battle between the Goguryeo and Tang dynasty China in 645 CE.
Korean fortresses are fortifications constructed by Koreans since the Three Kingdoms of Korea period. Koreans developed a unique and distinct fortress tradition. Korea, beginning with Goguryeo, has been called "a country of fortresses"; almost 2,400 mountain fortress sites have been found in Korea.
The siege of Ansi took place between Goguryeo and Tang forces in Ansi, a fortress in the Liaodong Peninsula, and the culmination of the First campaign in the Goguryeo–Tang War. The confrontation lasted for about three months from 20 June 645 to 18 September 645.
Yan was a Chinese kingdom that existed from July 237 to September 238 CE in the Liaodong Peninsula during the Three Kingdoms period. Its predecessor was an independent regime ruled by Gongsun Du and his son Gongsun Kang from 190 to 237. Though it only claimed independence in 237, historians such as Wang Zhongshu and Hou Tao consider it to be a de facto independent regime from when Gongsun Du established his rule in Liaodong in 190. Although it existed during the Three Kingdoms period, it is not counted as one of the eponymous three kingdoms: Cao Wei, Shu Han, and Eastern Wu. Nevertheless, writers such as Kang Youwei consider it to be a "fourth country".
Xiangping is a historical name of Liaoyang, Liaoning province. Xiangping was first mentioned in history as the capital of the Liaodong Commandery in the state of Yan, and the eastern terminus of the Great Wall of Yan established in 284 BC. After the unification of China by the Qin dynasty, Xiangping became the political and cultural center of what is now Northeastern China. From the 4th century onward, Xiangping was successively ruled by the Former Yan and Later Yan. The city was taken by Goguryeo in AD 404 and renamed to Liaodong/Yodong (遼東) City. It saw several major battles during the Goguryeo–Sui War and Goguryeo–Tang Wars before eventually falling to the Tang dynasty.
