america ended slavery in the united states
<em>Answer:</em>
<em>Correct answer choice is : It prevented states from denying citizens equal protection under the law. </em>
<em>Explanation:</em>
<em>The Fourteenth Amendment to the United States Constitution was ratified on July 9, 1868, as one of the Reconstruction Amendments. The amendment speaks citizenship rights and equal security of the laws and was introduced in reply to concerns compared to former slaves following the American Civil War.</em>