Which statement explains why the Thirteenth, Fourteenth, and Fifteenth Amendments were added to the Constitution?(1 point)

Responses

a the Union winning the Civil War, ultimately abolishing slavery within the whole country

b the Revolutionary War, ultimately freeing colonists from the British Monarchy

c the Confederate South winning the Civil War

d a rebellion led by former enslaved people

a the Union winning the Civil War, ultimately abolishing slavery within the whole country