History of Korea
After the end of WWII in 1945, the Allies divided the country into a northern area (protected by the Soviets) and a southern area protected (primarily by the United States). In 1948, when the powers failed to agree on the formation of a single government, this partition became the modern states of North and South Korea. The peninsula was divided at the 38th Parallel: the "Republic of Korea" was created in the south, with the backing of the US and Western Europe, and the "Democratic People's Republic of Korea" in the north, with the backing of the Soviets and the communist People's Republic of China. The new premier of North Korea, Kim il-Sung, launched the Korean War in 1950 in an attempt to reunify the country under Communist rule. After immense material and human destruction, the conflict ended with a cease-fire in 1953. The two nations officially remain at war because a peace treaty was never signed. In 1991, both states were accepted into the United Nations.
April Revolution
The April Revolution, sometimes called the April 19 Revolution or April 19 Movement, was a popular uprising in April 1960, led by labor and student groups, which overthrew the autocratic First Republic of South Korea under Syngman Rhee. It led to the resignation of Rhee and the transition to the Second Republic of South Korea. The events were touched off by the discovery in Masan Harbor of the body of a high school student killed by a tear-gas shell in demonstrations against the elections of March 1960.