Later Silla

Later Silla. Also known as Unified Silla, it was a Korean kingdom that lasted from 668 to 935 CE, following the conquest of the rival Baekje and Goguryeo kingdoms with the military assistance of the Tang dynasty. This period marked the first sustained unification of most of the Korean Peninsula, establishing a centralized state that fostered a golden age of art, culture, and international trade. The capital was established at Gyeongju, which became one of the world's largest cities at the time, and the state's stability allowed for significant advancements in Buddhism, astronomy, and Confucian scholarship.

History

The foundation was solidified after the Silla-Tang War, where Silla forces expelled Tang armies from the peninsula, securing its territorial gains. The reign of King Munmu and his successor, King Sinmun, saw the consolidation of power through the suppression of aristocratic revolts and the establishment of a centralized bone-rank system. Key events include the Kim Heon-chang rebellion and the later Jang Bogo's dominance in maritime affairs. The late 8th and early 9th centuries, under monarchs like King Seongdeok and King Wonseong, represented a cultural and political zenith before internal strife began to erode royal authority.

Government and society

The state was governed by a rigid aristocratic hierarchy known as the bone-rank system, which dictated all social, political, and military positions based on hereditary bloodline. The supreme council, the Hwabaek, was composed of high-ranking nobles from the Jingol "true bone" class. Local administration was managed through a system of nine provinces and five secondary capitals, with critical military commands like the Nine Mountain Schools of Seon emerging later. Society was stratified, with the yangban class beginning to form, while the majority of the population were peasants or low-born, including a significant slave class.

Culture and achievements

This era is renowned for its profound Buddhist art and architecture, epitomized by the Seokguram Grotto and the Bulguksa temple, both commissioned by Kim Dae-seong. The Cheomseongdae observatory in Gyeongju stands as one of the oldest surviving astronomical observatories in East Asia. Literary works flourished, including the hyangga poetry of monks like Wolmyeong, and the Samguk sagi and Samguk yusa were later compiled based on records from this period. Advances were also made in metallurgy, ceramics, and the creation of exquisite artifacts like the Divine Bell of King Seongdeok.

Economy

The economy was based on a complex system of taxation in grain and cloth, supported by advanced agriculture in regions like the Gyeongsang basin. International trade was a major pillar, with the kingdom acting as a hub between China, Japan, and the Abbasid Caliphate. The port of Ulsan Bay and the Danghangseong fortress facilitated this commerce, dealing in silk, ceramics, books, and precious metals. Merchant and military leader Jang Bogo established a near-monopoly on maritime trade and founded the Cheonghaejin garrison to protect shipping lanes and combat Japanese piracy.

Relations with neighboring states

Following the Silla-Tang War, diplomatic relations with the Tang dynasty were normalized, leading to a flourishing exchange of culture, technology, and goods, with many Silla students studying at the Tang capital Chang'an. Tensions persisted with the remnants of Goguryeo and Baekje, which later evolved into Balhae and Later Baekje respectively. Relations with Japan were multifaceted, involving both trade through Tsushima Island and conflict with pirates. The kingdom also maintained contact with states in Manchuria and across the Yellow Sea.

Decline and fall

The decline began in the late 9th century due to intense political instability, with successive kings like Heongang and Jinseong unable to control powerful aristocratic families and regional warlords. Widespread peasant revolts, such as those led by Kim Heon-chang and later Gung Ye, erupted across the countryside. The period of the Later Three Kingdoms began as rebels Gung Ye and Gyeon Hwon founded Taebong and Later Baekje, respectively. The final blow came when Gyeon Hwon sacked Gyeongju, and the last king, Gyeongsun, surrendered his throne to Wang Geon, the founder of the Goryeo dynasty, in 935. Category:Former countries in Korean history