What was one way that the United States profited from World War I?

The answer is D. They traded war materials with allies

Since the US didn't want to get involved with the war directly in the beginning, they traded materials and resources to aid their allies.

Explanation:

they treated war materials with allies

Explanation:

world war I led to an economic and industrial boom, as factory owners known as "merchants of death" mad billions off of supplying the allies war effort. it created a vibrant middle class in this country that would strengthen all the way through the 1920s. hope this helps you!

Emily Davison, in full Emily Wilding Davison, (born October 11, 1872, Roxburgh House, Greenwich, Kent [now part of Greater London], England—died June 8, 1913, Epsom, Surrey [now part of Greater London]), British activist who became a martyr to the cause of women's suffrage when she entered the racetrack during the 1913