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.
Dissolution of Czechoslovakia
Czechoslovakia was created with the dissolution of Austria-Hungary at the end of World War I. In 1918, a meeting took place in Pittsburgh, Pennsylvania, United States, where the future Czechoslovak president Tomáš Garrigue Masaryk and other Czech and Slovak representatives signed the Pittsburgh Agreement, which promised a common state consisting of two equal nations, Slovaks and Czechs. Soon after, the philosophy of Edvard Beneš pushed for greater unity and a single nation.