Southeast Europe or Southeastern Europe is a geographical region of Europe, consisting primarily of the Balkan peninsula. Sovereign states that are, at least partially, included in the region are, in alphabetical order, Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Greece, Kosovo,Macedonia, Moldova, Montenegro, Romania, Serbia, Slovenia and Turkey.
These boundaries can vary greatly due to political, economic, historical, cultural, and geographic considerations of the observer and as such are widely disputed.
The first known use of the term "Southeast Europe" was by Austrian researcher Johann Georg von Hahn (1811–1869) as a broader term than the traditional "Balkans".
This concept is based on the boundaries of the Balkan peninsula. The countries that have been described as being entirely within the region are: Albania, Kosovo,Bosnia and Herzegovina, Bulgaria, Macedonia and Montenegro.
Countries that are, at least partially, described to be within the region are: Croatia, Greece, Romania, Serbia, Slovenia. Therefore, the full list of countries would be as follows:
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