The correct answer is C) the creation of a special committee to promote the war effort.
During World War I, the US federal government created an agency aimed at promoting the war effort. This campaign consisted of a significant amount of propaganda in the form of posters. These posters encouraged citizens to ration their foods so that soldiers would be able to eat, create victory gardens so that they rely less on businesses and farms for food, and buying war bonds in order to support the government financially during this time. This type of propaganda was highly effective during this era.
They had to face racism from many white Americans. They also were treated unfairly by being segregated from whites.
C. The earliest ancestors of humans lived in Africa.
The stock market crash of 1929; the collapse of world trade due to the Smoot-Hawley Tariff (Hawley, it was signed by President Herbert Hoover on June 17, 1930. The act raised US tariffs on over 20,000 imported goods. The tariffs under the act, excluding duty-free imports were the second highest in United States history, exceeded by only the Tariff of 1828), government policies; bank failures and panics; and the collapse of the money supply.