The river Danube and the South Dobrogea (from Vama veche to Ostrov in Romania).
This boundary is mainly Danube; and a in the South of Dobrogea a terrestrial border.
This is the boundary with Ukraine: mountains and the river Tisa.
The river Danube and the South Dobrogea.
the country that forms the northern boundary of the United States is Canada :)
The sea that forms the northern boundary of Africa is the Mediterranean Sea. The countries of Morocco, Algeria, Tunisia, Libya and Egypt border it.
This is the river Danube.
The Arctic Ocean
red river
The 42nd northern latitude
The sea that forms the northern boundary of Africa is the Mediterranean Sea. The countries of Morocco, Algeria, Tunisia, Libya and Egypt border it.
soviet union
Mediterranean Sea