North America, abundant with majestic rivers, boasts an intricate network ... Provides hydropower to 40 million people. - Major distributary of the Mississippi. - Watershed: 95,100 sq miles.
Major distributary ... The Missouri River is the longest, flowing 3,768 km (2,341 miles) across the U.S. before joining the Mississippi River. 2. What is the most important river in North America?