Answer:
to extend, describe, and protect the rights of freed slaves
Explanation:
After slavery was abolished in United States, many of the people (especially from the former confederate states) Still actively being hostile to the former slaves. They're actively insulting them, not letting them rent any properties, prevented them from getting a job, etc.
In response to this, the Federal government initiated The Reconstruction amendment.
These amendments was intended to help the former slaves transition into legal citizens of United States. It provided them with education, ability to be involved in the government, Protection from the law, etc.