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.
First Czechoslovak Republic
The First Czechoslovak Republic (, ) was the Czechoslovak state that existed from 1918 to 1938. The state was commonly called Czechoslovakia (Czech and ). It was composed of Bohemia, Moravia, Czech Silesia, Slovakia and Subcarpathian Ruthenia.