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.
History of Czechoslovakia
On 14 March 1939, the Slovak State declared its independence as a satellite state under Jozef Tiso. Hitler forced Hácha to surrender what remained of Bohemia and Moravia to German control on 15 March 1939, establishing the German Protectorate of Bohemia and Moravia. On the same day, the Carpatho-Ukraine (Subcarpathian Ruthenia) declared its independence and was immediately invaded and annexed by Hungary. Finally, on 23 March, Hungary invaded and occupied some further parts of eastern Slovakia from Carpatho-Ukraine.