Slovakia
The Slovak Republic and the Czech Republic went their separate ways after 1 January 1993, an event sometimes called the Velvet Divorce. Slovakia has remained a close partner with the Czech Republic. Both countries co-operate with Hungary and Poland in the Visegrád Group. Slovakia became a member of NATO on 29 March 2004 and of the European Union on 1 May 2004. On 1 January 2009, Slovakia adopted the Euro as its national currency.
History of Czechoslovakia
Members of Czechoslovakia's parliament (the Federal Assembly), divided along national lines, barely cooperated enough to pass the law officially separating the two nations in late 1992. On 1 January 1993, the Czech Republic (Czechia) and the Slovak Republic (Slovakia) were simultaneously and peacefully founded.