The answer is D. I've done some research.
Answer: Brigadier General William Sibert
Explanation:
On June 8, 1917, Brigadier General William Sibert assumed command of them as the “First Expeditionary Division.” Organized as a “square” division of more than 28,000 men, the First Division was twice the size of either the Allied or German divisions on the Western Front.
Answer: Plessy v. Ferguson was a landmark 1896 U.S. Supreme Court decision that upheld the constitutionality of racial segregation under the “separate but equal” doctrine. ... As a result, restrictive Jim Crow legislation and separate public accommodations based on race became commonplace.
Explanation: