page_title: Korea
section_title: Three Kingdoms
hierarchical_section_title: Korea / History / Three Kingdoms
caption_attribution_description: English: Buddha at Seokguram in South Korea, World Heritage picture Deutsch: Koreanischer Buddha in der Seokguram-Höhle. – In Meditationshaltung sitzend berührt Siddhartha Gautama mit der Rechten die Erde, um sie als Zeugin für seine bisherigen Verdienste anzurufen und sein Anrecht auf Erlangung des höchsten Zieles, des Bodhi, zu unterstreichen (Bhumisparsa Mudra).
context_page_description: Korea is a region in East Asia; since 1945 it has been divided into what are now two distinct sovereign states: North Korea and South Korea. Korea consists of the Korean Peninsula, Jeju Island, and several minor islands near the peninsula. It is bordered by China to the northwest and Russia to the northeast. It is separated from Japan to the east by the Korea Strait and the Sea of Japan.
  During the first half of the 1st millennium, Korea was divided between the three competing states of Goguryeo, Baekje, and Silla, together known as the "Three Kingdoms of Korea". In the second half of the 1st millennium, Silla defeated and conquered Baekje and Goguryeo, leading to the "Unified Silla" period. Meanwhile, Balhae formed in the north, superseding former Goguryeo. Unified Silla eventually collapsed into three separate states due to civil war, ushering in the Later Three Kingdoms. Toward the end of the 1st millennium, Goguryeo was resurrected as Goryeo, which defeated the two other states and unified the Korean Peninsula as a single sovereign state. Around the same time, Balhae collapsed and its last crown prince fled south to Goryeo.
context_section_description: The Three Kingdoms of Korea consisted of Goguryeo, Silla, and Baekje. Silla and Baekje controlled the southern half of the Korean Peninsula, maintaining the former Samhan territories, while Goguryeo controlled the northern half of the Korean Peninsula, Manchuria and the Liaodong Peninsula, uniting Buyeo, Okjeo, Dongye, and other states in the former Gojoseon territories.
  Goguryeo was a highly militaristic state; it was a powerful empire and one of the great powers in East Asia, reaching its zenith in the 5th century when its territories expanded to encompass most of Manchuria to the north, parts of Inner Mongolia to the west, parts of Russia to the east, and the Seoul region to the south. Goguryeo experienced a golden age under Gwanggaeto the Great and his son Jangsu, who both subdued Baekje and Silla during their times, achieving a brief unification of the Three Kingdoms of Korea and becoming the most dominant power on the Korean Peninsula. In addition to contesting for control of the Korean Peninsula, Goguryeo had many military conflicts with various Chinese dynasties, most notably the Goguryeo–Sui War, in which Goguryeo defeated a huge force said to number over a million men. In 642, the powerful general Yeon Gaesomun led a coup and gained complete control over Goguryeo. In response, Emperor Tang Taizong of China led a campaign against Goguryeo, but was defeated and retreated. After the death of Tang Taizong, his son Emperor Tang Gaozong allied with the Korean kingdom of Silla and invaded Goguryeo again, but was unable to overcome Goguryeo's stalwart defenses and was defeated in 662. However, Yeon Gaesomun died of a natural cause in 666 and Goguryeo was thrown into chaos and weakened by a succession struggle among his sons and younger brother, with his eldest son defecting to Tang and his younger brother defecting to Silla. The Tang-Silla alliance finally conquered Goguryeo in 668. After the collapse of Goguryeo, Tang and Silla ended their alliance and fought over control of the Korean Peninsula. Silla succeeded in gaining control over most of the Korean Peninsula, while Tang gained control over Goguryeo's northern territories. However, 30 years after the fall of Goguryeo, a Goguryeo general by the name of Dae Joyeong founded the Korean-Mohe state of Balhae and successfully expelled the Tang presence from much of the former Goguryeo territories.
  The southwestern Korean kingdom of Baekje was founded around modern-day Seoul by a Goguryeo prince, a son of the founder of Goguryeo. Baekje absorbed all of the Mahan states and subjugated most of the western Korean peninsula (including the modern provinces of Gyeonggi, Chungcheong, and Jeolla, as well as parts of Hwanghae and Gangwon) to a centralised government; during the expansion of its territory, Baekje acquired Chinese culture and technology through maritime contacts with the Southern Dynasties. Baekje was a great maritime power; its nautical skill, which made it the Phoenicia of East Asia, was instrumental in the dissemination of Buddhism throughout East Asia and continental culture to Japan. Historic evidence suggests that Japanese culture, art, and language were influenced by the kingdom of Baekje and Korea itself; Baekje also played an important role in transmitting advanced Chinese culture to the Japanese archipelago. Baekje was once a great military power on the Korean Peninsula, most notably in the 4th century during the rule of Geunchogo when its influence extended across the sea to Liaoxi and Shandong in China, taking advantage of the weakened state of Former Qin, and Kyushu in the Japanese archipelago; however, Baekje was critically defeated by Gwanggaeto the Great and declined.
  Although later records claim that Silla was the oldest of the Three Kingdoms of Korea, it is now believed to have been the last kingdom to develop. By the 2nd century, Silla existed as a large state in the southeast, occupying and influencing its neighboring city-states. In 562, Silla annexed the Gaya confederacy, which was located between Baekje and Silla. The Three Kingdoms of Korea 
caption: Seokguram Grotto from the Silla era, a UNESCO World Heritage Site
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