Volstead Act: This act defined which beverages were considered "intoxicating liquors" under the Eighteenth Amendment and provided guidelines for enforcement.
Twenty-First Amendment: This amendment repealed (cancelled) Prohibition by overturning the Eighteenth Amendment in 1933.
Temperance Movement: This social reform campaign advocated for reducing or eliminating alcohol consumption in society, eventually leading to Prohibition with support from organizations like Woman's Christian Temperance Union (WCTU).