What abolished slavery in all US state and provided the rights of citizenship to former slaves?

The 13th Amendment to the United States Constitution, ratified in 1865, abolished slavery in all U.S. states. Following this, the 14th Amendment, ratified in 1868, granted citizenship rights to former slaves, ensuring equal protection under the law. Together, these amendments were pivotal in redefining the legal status of African Americans in the post-Civil War era.