Option 4: The Fourteenth Amendment later became the basis for equal rights claims.
The 14th Amendment to the U.S. Constitution (1868) gives citizenship to all persons born or naturalized in the United States, including black people, and guarantees all citizens the right of a due process of law and equal protection of the laws, among others.
This amendment later became the basis for equal rights claims, especially in many cases argued in the Supreme Court, two examples of this was the Brown v. Board of Education case (1954), in which the Supreme Court overturned the “separate but equal” since segregated public schools violated the equal protection clause of the 14th Amendment and the Loving v. Virginia case (1967) that struck down state laws banning interracial marriage in the United States, basing on the amendment.