The eighteenth amendment was the prohibition of alcohol. This was drafted by Wayne Wheeler. After it was ratified by states, it was passed in 1919, by Congress. The amendment was put into act in 1920. This amendment said that the production, transport, and sale of alcoholic beverages was prohibited.
The twenty-first amendment was the repeal of the eighteenth amendment. It said that the prohibition of alcohol was no longer in effect. Congress passed this in February of 1933. The states also ratified it, and so the amendment went into effect on December fifth 1933. During the thirteen years prohibition was in effect, they called it the "Great Experience".