Temperance movement. The entire definition of Temperance is abstention from alcohol, and the movement behind it was strongest in the 1910's-20's, resulting in the Eighteenth Amendment, banning the sale and production of alcohol.
This created the need for the twenty-first amendment, which actually does nothing besides repeal the Eighteenth amendment.
The temperance movement, which aimed to reduce or eliminate alcohol consumption, gained prominence in the 19th and 20th centuries, culminating in the passing of the Eighteenth Amendment in 1919. Key organizations such as the WCTU and the Anti-Saloon League were instrumental in this movement. Ultimately, Prohibition was enacted, but it was later repealed by the Twenty-First Amendment in 1933.
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