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.
Slovak Republic (1939–1945)
The First Slovak Republic ceased to exist "de facto" on 4 April 1945 when the Red Army captured Bratislava and occupied all of Slovakia. "De jure" it ceased to exist when the exiled Slovak government capitulated to General Walton Walker leading the XX Corps of the 3rd US Army on 8 May 1945 in the Austrian town of Kremsmünster. In summer 1945, the captured former president and members of former government were handed over to Czechoslovak authorities.