In 668, Silla forces allied with China’s Tang dynasty finished the defeat of Goguryeo, following earlier victories over Baekje. This is commonly treated as the start of the Unified Silla era, because Silla now controlled most of the Korean Peninsula south of the Taedong River.
After the joint conquests, Tang authorities tried to administer former Baekje and Goguryeo areas directly, which clashed with Silla’s goal of peninsula-wide rule. Fighting between Silla (with Baekje and Goguryeo loyalists) and Tang began in 670, turning former allies into rivals.
On September 29, 675, Silla forces defeated a Tang army at Maeso during the Silla–Tang War. The battle helped shift momentum toward Silla and contributed to Tang’s eventual withdrawal from most of the peninsula.
By 676, Silla had won the Silla–Tang War and reasserted control over territory south of the Taedong River. This outcome secured Silla’s independence from Tang and solidified a unified political order in much of the peninsula.
King Munmu, often considered the first ruler of Unified Silla, died on July 24, 681. Later tradition holds that his cremated remains were placed at sea near Gyeongju, reflecting a belief that he would protect the kingdom even after death.
In 682, Unified Silla established the Kukhak, a national school focused on the Confucian classics and training officials. This marked a stronger emphasis on centralized administration and a shared governing curriculum for the expanded state.
Bulguksa Temple, a major Buddhist complex at Gyeongju, is described in UNESCO materials as built in 774. Projects like Bulguksa show how Buddhism remained closely tied to elite culture and state identity in Unified Silla.
In 822, aristocrat Kim Heonchang led a major rebellion against the central government. Although it was suppressed, the uprising is widely treated as a sign that succession disputes and regional power bases were eroding royal authority.
In 889, the Silla court’s effort to collect taxes by force helped trigger uprisings by farmers and other groups across the country. These revolts weakened the government’s reach outside the capital and created openings for armed local leaders.
In 901, the rebel leader Gung Ye proclaimed himself king of Later Goguryeo (later associated with the Taebong state). This was a major step into the “Later Three Kingdoms” era, as rival states emerged alongside a shrinking Silla.
In 918, Wang Geon replaced Gung Ye and founded the Goryeo dynasty, making it a new center of power in the north. Goryeo’s rise changed the political balance and set the stage for Silla’s final surrender.
In 935, King Gyeongsun, the final ruler of Silla, surrendered to Wang Geon and the Goryeo state. This ended Unified Silla as an independent kingdom and transferred authority to a new dynasty that would soon unify the peninsula again.
Unified Silla (668–935)