<span>Much of the commercially important waterways of the United States consist of the Mississippi River System—the Mississippi River and connecting waterways. .... States on the Gulf Coast and throughout the Midwest and Ohio Valley ...</span>
Committing and trying to pursue for it by taking classes
Answer:
Geographic Features
Explanation:
They are Geographic Features because they all come from the earth in some mannor. Mountains are rock formed from the eatth along with dessets just flatter, and lake's are water from erosion of rock.
