Key Facts
- Duration
- 57 BCE – 935 CE (~992 years)
- Peak area
- ~146,000 km² (after 668 CE unification)
- Early population
- ~850,000 people (170,000 households)
- Baekje conquered
- 660 CE (with Tang China alliance)
- Goguryeo conquered
- 668 CE (completing peninsula unification)
Imperial Zenith Metrics
Historical Trajectory
Phase I: Rise
Silla originated as a chiefdom within the Jinhan confederacy of the Samhan polities in the southern Korean peninsula, traditionally founded by the semi-mythological Hyeokgeose of the Park clan around 57 BCE. Initially the weakest of the Three Kingdoms, it consolidated local power, absorbed the Gaya confederacy, and formed strategic alliances first with Sui and then Tang China, positioning itself to challenge its stronger neighbors Baekje and Goguryeo.
Phase II: Zenith
Leveraging its Tang alliance, Silla conquered Baekje in 660 CE and Goguryeo in 668 CE, unifying most of the Korean peninsula under a single administration for the first time. The Unified Silla period saw Gyeongju flourish as a cultural and political capital, with Buddhist art, architecture, and scholarship reaching notable heights, while the state maintained diplomatic and commercial ties across East Asia.
Phase III: Decline
After nearly a thousand years, Silla's central authority deteriorated in the late ninth century due to aristocratic power struggles, regional rebellions, and peasant uprisings. The kingdom fragmented into the Later Three Kingdoms — Silla, Later Baekje, and Taebong — as rival warlords carved out competing states. The kingdom formally surrendered power to Wang Geon's Goryeo dynasty in 935 CE, ending Silla's rule.
Notable Imperial Reigns
Selected rulers mapping the empire’s trajectory