The largest river system of North America includes
- River Mackenzie, which drains into the Arctic Ocean.
- The St. Lawrence River and the Hudson River, which connect the Great Lakes and drain into the North Atlantic Ocean.
- The Yukon and Columbia rivers, which flow into the Pacific Ocean.
- The Mississippi and Missouri rivers, which drain into the Gulf of Mexico.
Thus, the Mississippi-Missouri river system forms the largest and most important river system of North America, covering a vast drainage basin and playing a major role in the continent’s economy and transportation.
