Thirteenth fourteenth and fifteenth amendments are called the reconstruction amendments which aimed to achieve political equality in the American society.
Step-by-step explanation:
The purpose of the thirteenth amendment was to abolish slavery and annihilate serving someone involuntarily. Fourteenth amendment advocates rights of an american citizen and fifteenth amendment proclaimed that all citizens are equal to vote in United States of America.
These amendments were called reconstruction amendments because it was significant in transforming united states which was partially free and partially slave states to a country on which liberty and equality was bestowed without any disparity on all citizens of US.