Because to the East the Mississippi, Missouri, and Ohio Rivers make up the continent's major river system. This system drains most of the interior planes of the United States. It also provides a an important network of waterways for trade and transportation.
Source:World Geography Today Texas Edition :)
because they are important habitats for fish and wild life called your mum
There are three Colorado Rivers in North America and South America.
Some important rivers that empty into the Atlantic Ocean include the Amazon River in South America, the Mississippi River in North America, the Congo River in Africa, the St. Lawrence River in North America, and the Loire River in Europe. These rivers play significant roles in their respective regions for transportation, agriculture, and biodiversity.
Where? And if you mean North America there are thousands
Gravity
There are many thousands of rivers in North America. The Liard River for example
Rocks, rivers, lakes are examples of abiotic things in North America.
rivers lakes
Its in North America
Mississippi-MissouriMackenzieYukon
It is ranked 3rd after the Mississippi and Mackenzie Rivers.
The Mississippi River.
Mississippi-MissouriMackenzieYukon