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.
Czech nationalism
In 1990–1992 during transformation of Czechoslovakia into liberal market economy, due to disputes on shape of Czechoslovak federation, Slovak national aspirations strengthened and one of the reasons for final dissolution of Czechoslovakia in 1992 were with the Slovak nationalism also Czech economic nationalism, for not to fund not so developed Slovak economy. Czech Republic became independent on 1 January 1993.