What was the main purpose of the 13th 14th 15th amendment?

The main purpose of the 13th, 14th, and 15th Amendments to the United States Constitution was to establish and protect the rights of formerly enslaved individuals following the Civil War. The 13th Amendment abolished slavery, the 14th Amendment granted citizenship and equal protection under the law to all persons born or naturalized in the U.S., and the 15th Amendment aimed to secure voting rights for African American men by prohibiting the denial of suffrage based on race. Together, these amendments aimed to promote civil rights and address the injustices faced by African Americans.