1920 – Alcohol Prohibition begins in the United States as the Volstead Act goes into effect. The Prohibition era was the period from 1920 to 1933 when the United States prohibited the production, importation, transportation, and sale of alcoholic beverages. The alcohol industry was curtailed by a succession of state legislatures, and Prohibition was formally introduced nationwide under the Eighteenth Amendment to the United States Constitution, ratified on January 16, 1919. Prohibition ended with the ratification of the Twenty-first Amendment, which repealed the Eighteenth Amendment on December 5, 1933. Led by Pietistic Protestants, prohibitionists first attempted to end the trade in alcoholic drinks during the 19th century. They aimed to heal what they saw as an ill society beset by alcohol-related problems such as alcoholism, family violence, and saloon-based political corruption. Many communities introduced alcohol bans in the late 19th and early 20th centuries, and enforcement of these new prohibition laws became a topic of debate. Not all alcohol was banned; for example, religious use of wine was permitted. Private ownership and consumption of alcohol were not made illegal under federal law, but local laws were stricter in many areas, some states banning possession outright. By the late 1920s, a new opposition to Prohibition emerged nationwide. The opposition attacked the policy, claiming that it lowered tax revenue at a critical time before and during the Great Depression and imposed "rural" Protestant religious values on "urban" America. The Twenty-first Amendment ended Prohibition, though it continued in some states. To date, this is the only time in American history in which a constitutional amendment was passed for the purpose of repealing another. The overall effects of Prohibition on society are disputed and hard to pin down. Some research indicates that alcohol consumption declined substantially due to Prohibition, while other research indicates that Prohibition did not reduce alcohol consumption in the long term. Americans who wanted to continue drinking alcohol found loopholes in Prohibition laws or used illegal methods to obtain alcohol, resulting in the emergence of black markets and crime syndicates dedicated to distributing alcohol. By contrast, rates of liver cirrhosis, alcoholic psychosis, and infant mortality declined during Prohibition. Because of the lack of uniform national statistics gathered about crime prior to 1930, it is difficult to draw conclusions about Prohibition's effect on crime at the national level. Prohibition had a negative effect on the economy by eliminating jobs dedicated to the then-fifth largest industry in the United States. Support for Prohibition diminished steadily throughout its duration, including among former supporters of Prohibition.
