Dissolution of Czechoslovakia
Since the federalization in 1968, Czechoslovakia had divided citizenship, either of the Czech Socialist Republic or of the Slovak Socialist Republic (the word 'Socialist' was dropped from both names shortly after the Velvet Revolution). This distinction, however, had little effect on the citizen's life. On January 1, 1993, all Czechoslovak citizens automatically became citizens either of the Czech Republic or the Slovak Republic, based on their previous citizenship, permanent residence address, birthplace, family ties, job, and other criteria. Additionally, people had one year's time to claim the other citizenship under certain conditions.
Second Czechoslovak Republic
The Czechoslovak Republic was dissolved when Germany invaded it on 15 March 1939 and annexed the Czech region into the Protectorate of Bohemia and Moravia. On the same day as the German occupation, the President of Czechoslovakia, Emil Hácha was appointed by the German government as the State President of the Protectorate of Bohemia and Moravia which he held throughout the war.