Answer:
The passage of the amendments was to abolish slavery, and establish civil rights to previous slaves, namely citizenship, due process of law, equal protection under the law and voting rights.
Explanation:
The Reconstruction Amendments were a series of legislation that abolished slavery and recognized the civil rights of the newly freed people, mostly black people.
The 13th Amendment prohibited slavery or any other system of involuntary servitude, the 14th Amendment extended the citizenship to all person born or naturalized in the U.S. and guaranteed due process of law and equal protection under the law; and the 15th Amendment protected people's right to vote regardless of their race, color, or previous condition of servitude.
