Modern History of South Korea By jaeminhyun Aug 22, 1910 Japan–Korea Annexation Treaty Period: Aug 22, 1910 to Aug 15, 1945 Korea under Japanese Rule Mar 1, 1919 3.1 Movement Apr 13, 1919 Provisional Government of Korea Period: Apr 13, 1919 to May 29, 1980 Republic of Korea Oct 30, 1929 Gwangju Student Independence Movement Aug 15, 1945 Independence from Imperial Rule of Japan Period: Sep 9, 1945 to Aug 15, 1948 U.S. Aug 15, 1948 Inauguration of President Syngman Rhee Period: Jun 25, 1950 to Jul 27, 1953 K.W. Apr 19, 1960 4.19 Revolution May 16, 1961 5.16 Military Coup Dec 17, 1963 Inauguration of President Chunghee Park Oct 17, 1972 Yusin Constitution Oct 26, 1979 10.26 Assassination of President Chunghee Park Dec 12, 1979 12.12 Military Coup