Twenty-first Amendment to the United States Constitution in the context of "Temperance movement"

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 Prohibition ended with the ratification of the Twenty-first Amendment, which repealed the Eighteenth Amendment on December 5, 1933.

A wide coalition of mostly 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, domestic 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. Prohibition supporters, called "drys", presented it as a battle for public morals and health. The movement was taken up by progressives in the Prohibition, Democratic, and Republican parties, and gained a national grassroots base through the Woman's Christian Temperance Union. After 1900, it was coordinated by the Anti-Saloon League. Opposition from the beer industry mobilized "wet" supporters from the wealthy Catholic and German Lutheran communities, but the influence of these groups receded from 1917 following the entry of the U.S. into the First World War against Germany.

State ratifying conventions are one of the two methods established by Article V of the United States Constitution for ratifying proposed constitutional amendments. The only amendment that has been ratified through this method thus far is the 21st Amendment in 1933.

The Eighteenth Amendment (Amendment XVIII) to the United States Constitution established the prohibition of alcohol in the United States. The amendment was proposed by Congress on December 18, 1917, and ratified by the requisite number of states on January 16, 1919. The Eighteenth Amendment was repealed by the Twenty-first Amendment on December 5, 1933, making it the only constitutional amendment in American history to be repealed.

The Eighteenth Amendment was the product of decades of efforts by the temperance movement, which held that a ban on the sale of alcohol would ameliorate poverty and other societal problems. The Eighteenth Amendment declared the production, transport, and sale of intoxicating liquors illegal, although it did not outlaw possession or consumption of alcohol. Shortly after the amendment was ratified, Congress passed the Volstead Act to provide for the federal enforcement of Prohibition. The Volstead Act declared that liquor, wine, and beer qualified as intoxicating liquors, and were therefore prohibited. Under the terms of the Eighteenth Amendment, Prohibition began on January 17, 1920, one year after the amendment was ratified.