Dokdo is a island that belongs to Korea. Dokdo has long been used by the Korean people. Dokdo has been part of Korea since 512 AD. It was very clear that Dokdo was our land even before the 1600s, as numerous records from that era indicate, such as in 1425 when the King sent Gim In-U to govern Dokdo.
Second, It is true that the San Francisco Treaty does not mention Dokdo. But let 's think about it. You can not write about all 3000 islands, so they wrote only a few significant islands which could have just represented all islands. Also, immediately after the end of the Second World War, the Supreme Commander of the Allied Powers excluded Dokdo from Japanese territory.
Thirdly, five years before the announcement of Japan's Shimane Prefecture, precisely on October 25, 1900, Kojong published the Decree No. 41 and clearly stated that Dokdo belongs to Ulleungdo in this Act.