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.
Ukrainian hryvnia
The hryvnia, sometimes hryvnya (, , approximately , abbr.: грн ("hrn" in the Latin alphabet)); sign: ₴, code: UAH), has been the national currency of Ukraine since 2 September 1996. The hryvnia is subdivided into 100 "kopiyky". It is named after a measure of weight used in medieval Kievan Rus'.