History of South Korea
On August 15, 1948, the Republic of Korea was formally established, with Rhee Syngman as the first president. With the establishment of Rhee's government, de jure sovereignty also passed into the new government. On September 9, 1948, a communist regime, the Democratic People's Republic of Korea (North Korea), was proclaimed under Kim Il-sung. However, on December 12, 1948, by its resolution 195 in the Third General Assembly, the United Nations recognized the Republic of Korea as the sole legal government of Korea.
Workers' Party of South Korea
The party was opposed to the formation of a South Korean state. In February–March 1948 it instigated general strikes in opposition to the plans to create a separate South Korean state. On April 3, 1948 the party led a popular uprising on Jeju island, against the unilateral declaration of the foundation of the Republic of Korea. In the suppression of the revolt, thousands of islanders were killed (see Jeju massacre).