The Eighteenth Amendment and the Twenty-First Amendment show how the U.S. Constitution can change when public opinion, social conditions, and political priorities shift. The Eighteenth Amendment created national Prohibition, a period when the manufacture, sale, and transportation of alcoholic beverages were banned across the country. Supporters hoped Prohibition would reduce crime, poverty, and family problems linked to alcohol.
Instead, the policy became one of the most famous examples of a constitutional experiment that was later reversed.
The Twenty-First Amendment repealed the Eighteenth Amendment in 1933, ending national Prohibition and returning much of alcohol regulation to the states. It is the only amendment in U.S. history that directly repeals another amendment. This repeal showed that the amendment process can correct a national policy when enough states and citizens support a change.
The story also teaches that laws work best when enforcement, public support, and practical outcomes are considered together.
Key Facts
- The Eighteenth Amendment established national Prohibition and took effect in 1920.
- Prohibition banned the manufacture, sale, and transportation of intoxicating liquors in the United States.
- The Volstead Act was the federal law used to enforce the Eighteenth Amendment.
- The Twenty-First Amendment repealed the Eighteenth Amendment in 1933.
- The Twenty-First Amendment is the only constitutional amendment that repeals another amendment.
- Amendment ratification rule: approval by 3/4 of the states is required for an amendment to become part of the Constitution.
Vocabulary
- Prohibition
- Prohibition was the national ban on making, selling, and transporting alcoholic beverages in the United States.
- Eighteenth Amendment
- The Eighteenth Amendment was the constitutional amendment that created national Prohibition.
- Twenty-First Amendment
- The Twenty-First Amendment was the constitutional amendment that repealed Prohibition.
- Repeal
- Repeal means to officially cancel or end a law or constitutional rule.
- Ratification
- Ratification is the formal approval process that makes a constitutional amendment legally valid.
Common Mistakes to Avoid
- Saying the Eighteenth Amendment banned drinking alcohol is wrong because it banned manufacture, sale, and transportation, not simple possession or drinking in every situation.
- Confusing the Twenty-First Amendment with the Volstead Act is wrong because the amendment repealed Prohibition, while the Volstead Act was the enforcement law for Prohibition.
- Thinking Congress alone repealed Prohibition is wrong because a constitutional amendment required ratification by the states.
- Assuming Prohibition ended all alcohol regulation is wrong because the Twenty-First Amendment allowed states to continue regulating alcohol within their borders.
Practice Questions
- 1 The Eighteenth Amendment took effect in 1920 and the Twenty-First Amendment was ratified in 1933. How many years did national Prohibition last?
- 2 A constitutional amendment needs approval from 3/4 of the states. If there were 48 states in 1933, how many states were needed to ratify the Twenty-First Amendment?
- 3 Explain why the Twenty-First Amendment is an important example of how the Constitution can respond to changing public opinion and real-world results.