Slovakia
From Tardis Wiki, the free Doctor Who reference
Slovakia was a country in Europe. It broke away from Czechoslovakia at some point in the 1990s, as did the Czech Republic, (PROSE: The King of Terror) after the communist government was overthrown. (COMIC: The Broken Man)
In the 23rd century, Slovakia and Czechia were again united as the Third Czech and Slovak Republic. (PROSE: Spoilsport)