Usan

Usan
우산국 (于山國)
?–1022
StatusKingdom
GovernmentMonarchy
History 
 Established
?
 Subjugation by Silla under General Isabu
512
 Submission to Goryeo
930
 Incorporation into Goryeo
1022
Succeeded by
Goryeo
Today part ofSouth Korea
Ulleungdo
Usan
Hangul
우산국
Hanja
于山國
Revised RomanizationUsan-guk
McCune–ReischauerUsan-guk

Usan-guk, or the State of Usan, occupied Ulleung-do and the adjacent islands during the Korean Three Kingdoms period. According to the Samguk Sagi, it was conquered by the Silla general Kim Isabu in 512. He is said to have used wooden lions or tigers to intimidate the residents into surrendering. It has been written that the alias of Usan-guk is Ulleung-do. Usan-guk rarely entered into historical records, but appears to have continued a largely autonomous existence until its loss of independence to Goryeo in 930.