Yu Kilchun 兪吉濬, who studied at Keio Gijuku from 1881 to 1882 as the first Korean student in Japan, wrote the Segye Taese-ron 世界大勢論 (on the world situation), an introduction to world geography and Western civilization in 1883. In this paper, the author elucidates the fact that Yu used the Yochi Shiryaku 輿地誌略 (12 vols.) of Uchida Masao 内田正雄, especially the general introduction (vol. 1) as a source. On the basis of a comparison of the two works, the author points out the following three points. First, Uchida had described Korea as a dependent state of imperial China, but Yu described Korea on the contrary as an independent state, but did not deny the fact that Korea was a tributary state of imperial China. Yu later argued in his main work, Soy...