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.
Banknotes of the Slovak koruna (1939-45)
In 1939, Czechoslovak notes for 100, 500 and 1000 korún of Czechoslovak koruna were issued with SLOVENSKÝ ŠTÁT overprinting stambs for use in the Slovak Republic. That year also were introduced first banknotes of Slovak koruna, 10 and 20 koruna notes by the government.