Unified Silla & Balhae
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King Seon of Balhae and the 'Flourishing State East of the Sea'
Under King Seon, Balhae reached its greatest territorial extent and refined its institutions, entering a golden age. Tang came to call it Haedong Seongguk, meaning 'the flourishing state east of the sea.'
Key developments
- 최대 영토Balhae Reaches Its Greatest Territorial Extent
Under King Seon, Balhae expanded in all directions, reaching its greatest territorial extent in its history.
- 5경 정비Completion of the Five Capitals Administrative System
Around King Seon's reign, Balhae completed its administrative system of five capitals, fifteen prefectures, and sixty-two counties.
- 해동성국Recognized by Tang as the 'Flourishing Nation East of the Sea'
Balhae was called 'the flourishing nation east of the sea' by Tang, acknowledging its powerful and prosperous state under King Seon.
- 문화 융성Flourishing of Blended Goguryeo–Tang Culture
At its peak, Balhae developed a distinctive culture blending Goguryeo traditions with Tang influences.
Related figures
Related places
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