The Nile is the longest river in the world, with a length of about 6650 km, slightly longer than the Volga, which is about 3530 km. Both rivers originate from multiple sources and flow through different countries and regions.
The Amazon is the largest river in the world by discharge and basin area, with about 209,000 cubic meters per second and 7,050,000 square kilometers, respectively. The Volga is the largest river in Europe by the same measures, with about 8,080 cubic meters per second and 1,360,000 square kilometers, respectively. Both rivers have many tributaries and are rich in biodiversity.
The Yangtze is the longest river in Asia and the third-longest in the world, with a length of about 6380 km. The Volga is the fourth-longest in the world. Both rivers flow from high altitudes in the mountains to lowlands and deltas, and have major economic and cultural significance for their regions.
The Mississippi is the second-longest river in North America and the fifteenth-longest in the world, with a length of about 3730 km. The Volga is the sixth-longest in the world. Both rivers flow through diverse landscapes and climates, and have played important roles in the history and development of their countries.
The Danube is the second-longest river in Europe and the twelfth-longest in the world, with a length of about 2850 km. The Volga is the first-longest in Europe. Both rivers flow through multiple countries and are part of the European waterway network, connecting the Black Sea and the North Sea.