Beginning in the early 6th century, Tsushima was a province of Japan, known as Tsushima Province (対馬国 Tsushima-no-kuni or 対州 Taish?). However, Before the rise of the Joseon Dynasty in Korea, the Koreans periodically considered Tsushima to be Korean territory.[8] Some Korean believe that the ancient Korean kingdom of Silla took Tsushima as a dependency, though it is not known whether actual control was exerted over the island. The discovery of a book written by American missionary Homer Hulbert mentioning Silla's occupation of Tsushima island has been cited by modern Korean historian, Lee Hyun-bok.
Tushimaは日本人が日本の領土と宣言しているだけであって、国際的にはTushimaは朝鮮の領域として知られていたことが Lee Hyun-bokの調査によって判明しました。
