How Did John Marshall Influence the United States

How did John Marshall influence the United States?

A) He created the first commercial steam ship, proving that people and freight can move by steam power.
B) He brokered the Adams-Onís Treaty, granting the U.S. the fertile land of Florida.
C) He influenced the future of the institution of slavery in the U.S. by convincing congress to pass the Missouri Compromise.
D) He influenced the future of the U.S. and Latin America through his Supreme Court rulings like the Monroe Doctrine.
E) He influenced the future of the U.S. economy through his Supreme Court rulings.