Open ended question
which amendment to the constitution is the only
one in american history to be repealed?

The 18th Amendment

Explanation: The Twenty-first Amendment repealed the Eighteenth Amendment in 1933, making the Eighteenth Amendment the only amendment to the U.S. Constitution ever to be repealed in its entirety.

the 14th amendment

Explanation:

The Fourteenth Amendment (Amendment XIV) to the United States Constitution was adopted on July 9, 1868, as one of the Reconstruction Amendments. Arguably one of the most consequential amendments to this day, the amendment addresses citizenship rights and equal protection of the laws and was proposed in response to issues related to former slaves following the American Civil War. The amendment was bitterly contested, particularly by the states of the defeated Confederacy, which were forced to ratify it in order to regain representation in Congress. The amendment, particularly its first section, is one of the most litigated parts of the Constitution, forming the basis for landmark decisions such as Brown v. Board of Education (1954) regarding racial segregation, Roe v. Wade (1973) regarding abortion, Bush v. Gore (2000) regarding the 2000 presidential election, and Obergefell v. Hodges (2015) regarding same-sex marriage. The amendment limits the actions of all state and local officials, including those acting on behalf of such an official.

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