Why was it necessary to add the Thirteenth, Fourteenth, and Fifteenth Amendments to
the U.S. Constitution following the Civil War?
O The Constitution outlawed the federal government's interference with state laws.
O The Constitution had condoned slavery and allowed states to set voting
requirements.
O The Bill of Rights gave state laws precedence over federal laws.
O They weren't necessary; they were passed merely for emphasis and propaganda.

the Thirteenth, Fourteenth, and Fifteenth Amendments were necessary to address the injustices of slavery, provide equal rights and protections to all citizens, and protect the voting rights of African Americans.

Explanation:

The Thirteenth, Fourteenth, and Fifteenth Amendments were added to the U.S. Constitution following the Civil War for the following reasons:

1. The Constitution had condoned slavery and allowed states to set voting requirements. The Thirteenth Amendment abolished slavery and involuntary servitude, ensuring that individuals could not be held as property. This amendment was necessary to legally end the institution of slavery and provide equal rights to all individuals.

2. The Fourteenth Amendment addressed citizenship and equal protection under the law. It granted citizenship to all individuals born or naturalized in the United States, regardless of their race or previous condition of servitude. It also prohibited states from denying any person equal protection of the laws. This amendment aimed to provide equal rights and legal protections to formerly enslaved individuals.

3. The Fifteenth Amendment prohibited racial discrimination in voting. It stated that the right to vote could not be denied or abridged on the basis of race, color, or previous condition of servitude. This amendment aimed to protect the voting rights of African Americans and ensure their political participation and representation.

Therefore, the Thirteenth, Fourteenth, and Fifteenth Amendments were necessary to address the injustices of slavery, provide equal rights and protections to all citizens, and protect the voting rights of African Americans.