Answer:
The best description for John Marshall's service to the United States Is:
He was chief of justice of the supreme court for 35 years.
Step-by-step explanation:
If I would have to define John Marshall's service to the united states in one word I would use devotion. He was an American politician and lawyer that held the title of chief of justice of the supreme court for 35 years because he served as secretary for the president James Adams, he was a military leader and exceptional contributor to the federal victory and was an outstanding diplomat that traveled to France in times in which the united states was under the french attack to agree on a stop of their aggressions.