Four Major River Systems of the World
- Nile River: World's longest (~6,600 km); lifeline of Egypt and Sudan; historic trade route.
- Amazon River: Largest by volume; >6,400 km through South America; hosts 10% of Earth's known species.
- Yangtze River: Asia's longest (~6,300 km); China's primary waterway for transport, irrigation, fishing; home to Three Gorges Dam.
- Mississippi River: ~3,700 km through US/Canada; North America's main commercial waterway; Gateway Arch at St. Louis.
Wanderlust World