Why dynasty ruled Korea until the 20th century?

Dynasties ruled Korea until the 20th century primarily due to the establishment of strong centralized states, such as the Goryeo and Joseon dynasties, which maintained political stability and cultural continuity over centuries. These dynasties implemented Confucian ideals, which reinforced social hierarchies and loyalty to the ruling family. Additionally, external threats, such as invasions from Japan and the Mongols, prompted the consolidation of power under dynastic rule for national defense. The fall of dynastic rule in the early 20th century was largely influenced by foreign Imperialism and internal pressures for modernization.