Answer:
The Balkans provides a land route between the Mediterranean and black seas
Step-by-step explanation:
Balkans or Balkan Peninsula is a portion of European territory located in the southwestern portion of the continent.
The Balkan territory is surrounded by the seas: Adriatic, Ionian, Aegean, Marmara and Black. Beyond the borders with the seas the Balkan Peninsula also borders the Middle East.
It is bathed by the Danube, Kuava, Morava and Maritsa rivers.