Answer:
C
<em>Hope that helps!</em>
Explanation:
The repeal of national Prohibition in 1933 showed that "<span>(4) unpopular laws are difficult to enforce" since drinking was very popular and people continued to do it. </span>
The Civilian Conservation Corps<span> (CCC) was a public work relief program that operated from 1933 to 1942 in the United States for unemployed, unmarried men from relief families as part of the New Deal.</span>
B - Slave revolts.
The revolt of Spartacus, which was also the most famous slave uprising in the history of the Roman Empire, lead to questions about the usefulness and effectiveness of the current governmental system in Rome. This, along with other factors, made them plunge into a crisis which ended through the transition to an empire.