Answer:
D. Whites and black afracains
Explanation:
Answer;
<span>The factors that led to his election included;
-Managed relief to Europe in the first World War
- He was a secretary of Commerce
-He supported prohibition promised to maintain prosperity.
Additionally the belief that the Catholic Church financed the Democratic Party and would rule the US if Alfred E. Smith became president, and Republicans taking credit for 1920's prosperity led to Herbert Hoover winning the presidential election in 1928. </span>
It ended in february 1917 because in the book it said that in 1917 the revolution became to a break point