The error that I found is the name, 'Liancourt Rocks'. In your post, there is a map that marked 'Dokdo' as
Liancourt Rocks. The correct name of the island is 'Dokdo'. So far, the Republic of Korea, since the Joseon Dynasty, Dokdo belongs to the uljinhyeon of the local metropolitan Samcheok, Gangwon Province, the land registry. There are many historical documents and maps that prove this. You can also find out from <The Paldo Chongdo> in 1481 and <Daedongyeojido> in 1861. Thus, Dokdo is our country, of course, the land of the Republic of Korea.