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.
Germany, in the Black Forrest.
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
Germany
slovakia
Austria
Germany
in heavan
If you mean the Danube River, then the answer is Germany.