1962 -- President Yoon Bo-sun steps down in protest over the "political purification law" that the National Assembly passed to prevent members of previous administrations from returning to office. Yoon's resignation came about 10 months after General Park Chung-hee seized control of the military. Park became president via a referendum in 1963 and ruled the country until he was assassinated in 1979.
1990 -- South Korea establishes diplomatic relations with Czechoslovakia, which later split into the Czech Republic and Slovakia.
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