The southern part of Eastern Europe, or Southeastern Europe, is the most mountainous part of Eastern Europe.
No. It is just a term for countries that are in the eastern part of Europe. Europe is one continent.
eastern europe - apex
Slovakia is located in Eastern Europe.
Iran is in Asia (Middle East), not Eastern Europe.
Eastern Europe.
No. Most of Russia is in Asia. The part that is in Europe is in eastern Europe.
Wurrtemburg Germany
The Black Sea is most associated with Eastern Europe.
It is sort of central-Eastern Europe.
Bulgaria is a part of Eastern Europe. However, if Europe was split into its 5 regions, then Bulgaria is a part of Southern Europe (you could go even further from there and say Southeastern Europe).
Romania is situated in the South-Eastern part of the Europe.