Which of the following rivers is the longest in Europe and discharges its waters into the Caspian Sea?

💡 Solution & Explanation

The Volga River is the longest river in Europe, originating in the Valdai Hills and flowing into the landlocked Caspian Sea. It serves as a vital commercial waterway for western Russia and supports extensive hydroelectric power generation. Rivers like the Danube and the Rhine empty into the Black Sea and the North Sea respectively. The Volga basin drains a significant portion of European Russia.