The Danube River is the longest river in the European Union and the second longest river in Europe, the Volga river in Russia is longest. The river originates in the Black Forest region of Germany and passes through Austria, Slovakia, Hungary, Croatia, Serbia, Bulgaria, Romania, Moldova and Ukraine before emptying into the Black Sea.
The Danube River begins in Germany's Black Forest region before flowing through ten countries in Europe.
Danube is a river in Europe
this country has it's capital on the river Danube . water from the Danube has to be treated before it is drinkable.
Africa
London
This river is Danube
in heavan
Germany
Austria
Germany
slovakia
If you mean the Danube River, then the answer is Germany.