Answer:
A. The economy of the south declined because it lost much of its slave labor force. I think.
I believe the answer is: "African Americans increased their push for civil rights on the home front"
The sentiment was initially made by African Americans who were being blatantly discriminated by the white citizens, in both job fields, education, or even the usage of public properties. This became the reason for the push for civil rights which finally realised by the The Civil Rights Act of 1964
Prohibition in the United States was a nationwide constitutional ban on the production, importation, transportation and sale of alcoholic beverages that remained in place from 1920 to 1933.