Taebong in the context of "Kung Ye"

Goryeo (Korean: 고려; Hanja: 高麗; MR: Koryŏ; pronounced [ko.ɾjʌ]; Middle Korean: 고ᇢ롕〮, romanized: kwòwlyéy) was a Korean state founded in 918, during a time of national division called the Later Three Kingdoms period, that unified and ruled the Korean Peninsula until the establishment of Joseon in 1392. Goryeo achieved what has been called a "true national unification" by Korean historians as it not only unified the Later Three Kingdoms but also incorporated much of the ruling class of the northern kingdom of Balhae, who had origins in Goguryeo of the earlier Three Kingdoms of Korea. According to Korean historians, it was during the Goryeo period that the individual identities of Goguryeo, Baekje and Silla were successfully merged into a single entity that became the basis of the modern-day Korean identity. The name "Korea" is derived from the name of Goryeo, also romanized as Koryŏ, which was first used in the early 5th century by Goguryeo; Goryeo was a successor state to Later Goguryeo and Goguryeo.

Goryeo was established in 918 when general Wang Kŏn, after rising under the erratic Taebong ruler Kung Ye, was chosen by fellow generals to replace him and restore stability. Throughout its existence, Goryeo, alongside Unified Silla, was known to be the "Golden Age of Buddhism" in Korea. As the state religion, Buddhism achieved its highest level of influence in Korean history, with 70 temples in the capital alone in the 11th century. Commerce flourished in Goryeo, with merchants coming from as far as the Middle East. The capital in modern-day Kaesong, North Korea was a center of trade and industry. Goryeo was a period of great achievements in Korean art and culture.

Kaesong (UK: /keɪˈsɒŋ/, US: /keɪˈsɔːŋ/; Korean: [kɛsʌ̹ŋ]) is a special city in the southern part of North Korea (formerly in North Hwanghae Province), and the capital of Korea during the Taebong kingdom and subsequent Goryeo dynasty. The city is near the Kaesong Industrial Region close to the border with South Korea and contains the remains of the Manwoldae palace. Called Songdo while it was the ancient capital of Goryeo, the city prospered as a trade centre that produced Korean ginseng. Kaesong now functions as North Korea's light industry centre.

During the Japanese occupation from 1910 to 1945, the city was known by the Japanese pronunciation of its name, "Kaijō". Between 1945 and 1950, Kaesong was part of South Korea and under its control. During the Korean War, North Korea captured the city, and the 1953 Korean Armistice Agreement left the city under North Korean control. Due to the city's proximity to the border with South Korea, Kaesong has hosted cross-border economic exchanges between the two countries as well as the jointly run Kaesong Industrial Region.

The House of Wang was the royal ruling house of the Goryeo dynasty of Korea, from 918 to 1392.

Its founder was Wang Kŏn, the chancellor of Taebong who overthrew its tyrant king Kung Ye and founded the new dynasty of Goryeo. His descendants ruled as kings for 474 years. From 1170 to 1270, the Goryeo kings were puppets of the Goryeo military regime. In 1270, the royal house broke free from the military regime's grasp and volunteered to become vassals of the Mongol Empire. During the Mongol domination of Goryeo, the House of Wang became semi-autonomous vassals of the Yuan dynasty, and engaged in intermarriage with the ruling Borjigin clan. In 1356, King Gongmin was able to restore the independence of Goryeo. However, after the Wihwado Retreat in 1388, Goryeo general Yi Sŏng-gye was able to seize power. In 1392, Yi ended the rule of the House of Wang, proclaiming himself King of Joseon.

Korean era names were titles adopted in historical Korea for the purpose of year identification and numbering. Era names were used during the period of Silla, Goguryeo, Balhae, Taebong, Goryeo, Joseon, and the Korean Empire. Various Korean regimes officially adopted the era names of Chinese dynasties.

Era names originated in 140 BCE in China, during the reign of the Emperor Wu of Han. Since the middle of the 6th century CE, various Korean regimes started to use era names.