What did congress make illegal in amendment 18? when was this amendment repealed?

The 18th Amendment to the U.S. Constitution banned the manufacture, sale, and transportation of alcohol (i.e. the beginning of Prohibition). It was ratified on January 16, 1919 and repealed by the 21st Amendment in 1933. In the over 200 years of the U.S. Constitution, the 18th Amendment remains the only Amendment to ever have been repealed.