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Romania (Romanian: România) is a country in Southeastern Europe. It borders Hungary and Serbia to the west, Ukraine and Moldova to the northeast, and Bulgaria to the south. Romania has a stretch of sea coast along the Black Sea, and the eastern and southern Carpathian Mountains run through its center.

The modern state of Romania was formed by the merging of the Danubian Principalities of Moldavia and Wallachia in 1859. The state united with Transylvania in 1918. Its capital and largest city is Bucharest (Romanian: Bucureşti), the sixth largest city in the EU. Romania joined NATO on March 29, 2004, and the European Union (EU) on January 1, 2007. Romania has the seventh largest population and the ninth largest territory in the EU.