Answer: Prohibitions during the twentieth century paved the way for black markets.
Step-by-step explanation:
During the twentieth century, the United States government's ban was primarily concerned with the ban on the production and consumption of alcohol. Various Christian associations, under pressure from the government, succeeded in their intentions. However, the situation was bad for the American economy. Namely, in such circumstances, a black market polygon was created, which left negative consequences for the economy. Due to that, the prohibition was lifted.