Dissolution of Czechoslovakia
The Dissolution of Czechoslovakia (, ), which took effect on 1 January 1993, was an event that saw the self-determined split of the federal state of Czechoslovakia into the Czech Republic and Slovakia, entities that had arisen before as the "Czech Socialist Republic" and the "Slovak Socialist Republic" in 1969 within the framework of a federal republic.
Second Czechoslovak Republic
The Second Czechoslovak Republic (, ), sometimes also called the Czech-Slovak Republic (Czech and ), existed for 169 days, between 30 September 1938 and 15 March 1939. It was composed of Bohemia, Moravia, Silesia and the autonomous regions of Slovakia and Subcarpathian Ruthenia, the latter renamed as of 22 November 1938 as Carpathian Ukraine ("Karpatská Ukrajina" in Czech).