Foreign relations of South Korea
On January 18, 1952 The first president of South Korea Syngman Rhee declared that the vicinity of Dokdo was a territory of South Korea (Syngman Rhee line). Subsequently, some 3,000 Japanese fishermen who conducted fishery operations in this vicinity were captured. This incident, called the Dai Ichi Daihoumaru Ship case strained relations between South Korea and Japan.
Division of Korea
On May 10, 1948 the south held a general election. It took place amid widespread violence and intimidation, as well as a boycott by opponents of Syngman Rhee. On August 15, the "Republic of Korea" ("Daehan Minguk") formally took over power from the U.S. military, with Syngman Rhee as the first president. In the North, the "Democratic People's Republic of Korea" ("Chosŏn Minjujuŭi Inmin Konghwaguk") was declared on September 9, with Kim Il-sung as prime minister.