Tsushima Island
…this period. After the Toi invasion, private trade started between Goryeo (modern day Korea), Tsushima, Iki Island, and Kyūshū, but halted during the Mongol invasions of Japan between 1274 and 1281. The Goryeosa, a history of the Goryeo dynasty, mentions that in 1274, Korean troops of the Mongol army led by Kim Bang-gyeong…