Final answer:
Underground locations that sold alcohol during the Prohibition era were known as speakeasies. These establishments contributed to a rise in organized crime and were part of a subculture born out of the efforts to curb alcohol consumption.
Step-by-step explanation:
Underground locations that sold alcohol during the Prohibition era were known as speakeasies. After the implementation of Prohibition, which was intended to curb the negative effects of alcohol consumption, a new subculture emerged. This subculture included illegal activities such as bootlegging, and the operation of clandestine saloons or speakeasies, where alcohol was sold and consumed away from the prying eyes of law enforcement. In cities like Detroit, the number of speakeasies soared, with thousands operating by 1925. The rise of such establishments contributed to an increase in organized crime, as demonstrated by figures like Al Capone and the Purple Gang, who controlled the illegal alcohol trade in cities like Detroit.