Answer: 13th, 14th and 15th
Step-by-step explanation:
The 13th, 14th, and 15th amendments to the US Constitution are considered the most important Presidential amendments. The 13th Amendment abolished slavery, the 14th Amendment granted citizenship and equal protection of the laws to all citizens, and the 15th Amendment prohibited the denial of the right to vote on the basis of race, color, or previous condition of servitude. These amendments established legal and constitutional protections for marginalized groups and paved the way for civil rights legislation and social progress.