Final answer:
The 21st Amendment repealed the 18th Amendment which established Prohibition in the United States.
Step-by-step explanation:
The amendment that repealed the 18th Amendment was the 21st Amendment. The 18th Amendment, also known as the Prohibition Amendment, established the ban on the production, sale, and transportation of alcoholic beverages in the United States. However, the negative consequences of Prohibition led to a shift in public opinion, resulting in the passage of the 21st Amendment in 1933, which repealed the 18th Amendment and ended Prohibition.
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