until 511, there was a Usan-ku k was living in the Dok-do and Ulng-do . But in 512, general Sa-bo Lee seize th e Usan-ku

until 511, there was a Usan-ku k was living in the Dok-do and Ulng-do . But in 512, general Sa-bo Lee seize th e Usan-kuk. Until now, Dok-do is our t erritory. About this, Korea said approbally Dok-do is our territory.