First Republic of Korea

The First Republic of Korea (Korean: 제1공화국; lit. 'First Republic') was the government of South Korea from August 1948 to June 1960. The First Republic was founded on 15 August 1948, and it became the first independent republican government in Korea. Syngman Rhee was the first president of South Korea. The National Assembly was created following the May 1948 general election, and the National Assembly in Seoul promulgated South Korea's first constitution in July, establishing a presidential system of government.

In 1947, the United Nations proposed elections under its supervision to establish a unified Korean government. South Korea participated, leading to the formation of the Republic of Korea. The Soviet Civil Administration in northern Korea refused, and North Korea was established separately, which ultimately led to the division. Accordingly, on 12 December 1948, the United Nations recognized the Republic of Korea as the only lawful government in Korea by UN General Assembly Resolution 195. The first republic claimed sovereignty over all of Korea but only controlled Korea south of the 38th parallel until the end of the Korean War in 1953, when the border was modified. The first republic was characterized by Rhee's authoritarianism, limited economic development, strong anti-communism, and by the late 1950s growing political instability and public opposition to Rhee. The April Revolution in April 1960 led to Rhee's resignation and the transition to the second Republic of Korea.

Rhee was supported in the elections by the Korea Democratic Party, but didn't include any of its members in his cabinet. In retaliation, the members of the party formed a united opposition Democratic Nationalist Party, and began to advocate a cabinet system which would remove power from the president. This led to a regrouping of the Rhee faction into the Nationalist Party, which later became the Liberal Party, and remained Rhee's base throughout his administration. The country's second parliamentary elections were held on May 30, 1950, and gave the majority of seats to independents.

The South Korean government continued many of the practices of the U.S. military government. This included the brutal repression of leftist activity. The Rhee government continued the harsh military action against the Jeju uprising. It also crushed military uprisings in Suncheon and Yeosu, which were provoked by orders to sail to Jeju and participate in the crackdown.

On June 25, 1950, North Korean forces invaded South Korea, starting the Korean War. Led by the United States, a 16-member coalition undertook the first collective action under the umbrella of the U.N. Command (UNC). Oscillating battle lines inflicted a high number of civilian casualties and wrought immense destruction. With the entry of the People's Republic of China on behalf of North Korea in 1951, the fighting came to a stalemate close to the original line of demarcation.

Armistice negotiations, initiated in July 1951, finally concluded on July 27, 1953 at Panmunjom, now in the Demilitarized Zone (DMZ). The resulting Armistice Agreement was signed by the North Korean army, Chinese People's Volunteers and the U.S.-led and South Korean-supported United Nations Command. A peace treaty has not been signed up to now. Following the armistice, the South Korean government returned to Seoul on the symbolic date of August 15, 1953.

This government oversaw several massacres, the most notable being the Bodo League massacre following the North Korean invasion in June 1950. The government executed 60,000 to 200,000 suspected communists.

After the armistice, South Korea experienced political turmoil under years of Syngman Rhee's presidency, which was ended by student revolt in 1960. Throughout his rule, Rhee sought to take additional steps to cement his control of the government. These began in 1952 (shortly after being elected to a second term), when the government was still based in Busan due to the ongoing war. In May of that year, Rhee pushed through constitutional amendments which made the presidency a directly elected position. In order to do this, he declared martial law and jailed the members of parliament whom he expected to vote against it. Rhee was subsequently elected by a wide margin. He regained control of parliament in the 1954 elections, and thereupon pushed through an amendment to exempt himself from the eight-year term limit.