The volga river flows through which european nation state?

The Volga River flows through the European nation state of Russia. It is the longest river in Europe, stretching for over 3,500 kilometers (2,200 miles) from its source in the Valdai Hills to its mouth at the Caspian Sea. The Volga River basin covers an area of over 1 million square kilometers (400,000 square miles) and includes parts of Russia, Kazakhstan, and Belarus. The river is a vital transportation route and a source of water for irrigation and hydroelectric power.