which amendment made it illegal to buy sell or produce alcohol

The amendment that made it illegal to buy, sell, or produce alcohol in the United States was the Eighteenth Amendment to the U.S. Constitution. It was ratified on January 16, 1919, and took effect one year later, on January 17, 1920. The Eighteenth Amendment specifically prohibited the manufacture, sale, or transportation of intoxicating liquors for beverage purposes within the United States but did not outlaw possession or consumption of alcohol. This amendment initiated the Prohibition Era in the U.S. and was later repealed by the Twenty-first Amendment in 1933.