Serbia (1879: Agreement)

 Serbia, officially the Kingdom of Serbia (Serbian :Краљевина Србија, Kraljevina Srbija), is a landlocked country located at the crossroads of Central and Southeastern Europe, covering the southern part of Carpathian basin and the central part of the Balkans. Serbia borders Greater Austria to the north, Kosovo to the southwest and Romania and Bulgaria to the east. Belgrade, Serbia's capital city is among the most populous in Southeast Europe.

After their settlement in the Balkans, Serbs formed several medieval kingdoms, which evolved into the Serbian Empire in the 14th century. By the 16th century, Serbian lands were conquered and occupied by the Ottomans, at times interrupted by the Habsburgs. In the early 19th century the Serbian revolution reestablished the country as the region's first constitutional monarchy.the country became a kingdom (it was originally a principality) in 1882.