Which amendment was the only one to be repealed in U.S. history?

The 18th Amendment is significant in U.S. history as it is the only amendment that has been repealed. Ratified in 1919, it initiated the prohibition of alcohol, making it illegal to manufacture, sell, or transport intoxicating liquors. This period, known as Prohibition, lasted until 1933, when the 21st Amendment was passed, effectively repealing the 18th Amendment. The repeal was a response to the numerous social and economic problems that Prohibition had caused, including the rise of organized crime and a lack of enforcement. The passage of the 21st Amendment signified a shift in public opinion and policy regarding alcohol consumption in the United States.

The other amendments mentioned did not undergo repeal; for example, the 19th Amendment granted women the right to vote and remains in effect, while the 15th Amendment ensures that the right to vote cannot be denied based on race. The 21st Amendment, although related to the 18th, is not itself a repealed amendment but rather the one that annulled it.