Bulgaria is a country in Southeast Europe. With a territory of 110,994 sq. km, Bulgaria ranks as the 15th-largest country in Europe.
The Bulgarian government functions as a parliamentary democracy within a unitary constitutional republic. Its government is a member of the European Union, NATO, the United Nations, the Council of Europe, the World Trade Organization and is a founding state of the OSCE and the Black Sea Economic Cooperation Organization. Bulgaria has a high Human Development Index of 0.743, ranking 58th in the world in 2010. (source)
Thank you Lilia!