The principal rivers of Russia are, the Wolga, the Don, the Nieper, the Dwina, and the Vistula.

The Wolga is a very great river, being three thousand miles long.

The Rhine, which is one of the largest rivers in Europe, rises in Switzerland.

The principal rivers of Italy are, the Po, the Arno, and the Tiber; the chief town of Italy, Rome, is built on the banks of the Tiber.

Rome was once the greatest city in the world.