German:
Donau
Slovak:
Dunaj
Hungarian:
Duna
Serbo-Croatian and Bulgarian:
Dunav
Romanian:
Dunărea
Ukrainian:
Dunay

Danube River, river, the second longest in Europe after the Volga. It rises in the Black Forest mountains of western Germany and flows for some 1,770 miles (2,850 km) to its mouth on the Black Sea. Along its course it passes through 10 countries: Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Bulgaria, Romania, Moldova, and Ukraine. The Danube played a vital role in the settlement and political evolution of central and southeastern Europe. Its banks, lined with castles and fortresses, formed the boundary between great empires, and its waters served as a vital commercial highway between nations. The river’s majesty has ...(100 of 2575 words)