Which of the following international rivers flows through or along the borders of ten European countries before emptying into the Black Sea via a massive delta?

💡 Solution & Explanation

The Danube is Europe's second-longest river, rising in Germany's Black Forest and traversing ten countries including Austria, Hungary, and Romania before emptying into the Black Sea. Rivers like the Rhine flow north into the North Sea, while the Volga flows entirely within Russia into the Caspian Sea. The Danube passes through more national capitals than any other river in the world, including Vienna, Bratislava, Budapest, and Belgrade.