Joseon

Timeline

1. 1392–1394Hanyang · SeoulYi Seong-gye overthrew the last Goryeo dynasty, founded Joseon and gained recognition from the Ming dynasty as suzerain, moved the capital to Hanyang in 1394, and promulgated founding principles based on Neo-Confucianism, laying the institutional foundation for the 500-year dynasty.
2. 1443–1446Hanyang · SeoulKing Sejong the Great (r. 1418–1450) directed scholars of the Jiphyeonjeon to develop Hunminjeongeum (한글), officially promulgated in 1446, which became an independent phonetic writing system for the Korean language and is praised as one of the most scientifically designed scripts in the history of human writing.
3. 1451–1460Hanyang · SeoulKing Munjong (r. 1450–1452) died of illness after only two years on the throne, and the young Danjong (r. 1452–1455) succeeded him; his uncle Prince Suyang launched the 'Gyeyu Jingnan' coup in 1455, deposed Danjong, and took the throne as Sejo (r. 1455–1468). During Sejo's reign he strengthened royal authority, advanced the compilation of the Gyeongguk Daejeon, and dispatched troops to suppress Jurchen tribes in the northeast; over this decade Joseon completed its political transition from institutional turmoil to stable centralized rule.
4. 1485Hanyang · SeoulDuring the reign of Seongjong, the Gyeongguk Daejeon was promulgated, compiling royal decrees and administrative regulations from successive reigns into a complete written legal code for Joseon, marking the maturity of the dynasty's institutional construction and thereafter serving as the core legal basis of state governance.