Prohibition in the United States was a nationwide constitutional ban on the production, importation, transportation, and sale of alcoholic beverages from 1920 to 1933. Prohibitionists first attempted to end the trade in alcoholic drinks during the 19th century.

How long did the prohibition last?

Nationwide Prohibition lasted from 1920 until 1933. The Eighteenth Amendment—which illegalized the manufacture, transportation, and sale of alcohol—was passed by the U.S. Congress in 1917. In 1919 the amendment was ratified by the three-quarters of the nation's states required to make it constitutional.

Why was the prohibition passed?

National prohibition of alcohol (1920–33) — the “noble experiment” — was undertaken to reduce crime and corruption, solve social problems, reduce the tax burden created by prisons and poorhouses, and improve health and hygiene in America.