21th amendment definition us history
Amendment XXI in the National Archives. The Twenty-first Amendment (Amendment XXI) to the United States Constitution repealed the Eighteenth Amendment to the United States Constitution, which had mandated nationwide Prohibition on alcohol on January 17, 1920. The Twenty-first Amendment was ratified on December 5, 1933.he Eighteenth Amendment to the Constitution had ushered in a period known as Prohibition, during which the manufacture, distribution, and sale of alcoholic beverages was illegal. Passage of the Eighteenth Amendment in 1919 was the crowning achievement of the temperance movement, but it soon proved highly unpopular.