Final answer:
During prohibition, the consumption of alcohol decreased by about 70%. Prohibition, which took effect in 1920, banned the manufacture, sale, and transportation of alcoholic beverages. The enforcement and effectiveness of prohibition varied across the country, but it resulted in a significant decrease in alcohol consumption during the 1920s.
Step-by-step explanation:
During prohibition, the consumption of alcohol decreased significantly. The exact decrease in consumption is difficult to determine, but it is estimated that alcohol consumption decreased by about 70%.
Prohibition, which took effect in 1920 with the ratification of the 18th Amendment, banned the manufacture, sale, and transportation of alcoholic beverages. This led to the closure of many breweries and distilleries, and the illegal production and distribution of alcohol by criminal organizations.
The enforcement and effectiveness of prohibition varied across the country, with some areas experiencing more success in reducing alcohol consumption than others. However, overall, prohibition resulted in a significant decrease in alcohol consumption during the 1920s.