View images of famous figures of the prohibition era including William Jennings Bryan, a “dry” supporter, Fiorello La Guardia, Mayor of NYC, and critic of Prohibition, President Herbert Hoover (1929-1933) a “dry,” and more. From 1920-1933, the 18th Amendment to the constitution ruled the land. It prohibited the making, transportation, and sale of alcohol. The amendment grew out of the pervasive alcohol abuse, especially among men and immigrant populations, of the 19th century. The Women’s Christian Temperance Union and Anti-Saloon League politicized the issue, and the nation was divided between “wets” opposed to the amendment, and “drys” supporting it.