Why was slavery a paradox in the United states?

A. people in the north refuse to allow a escapes slaves to live in their states

B. slavery had existed throughout the world for thousands of years

C. the Supreme Court ruled that slavery was illegal

D. it went against the ideals of freedom on which of the nation was founded

D. (A paradox is a statement that contradicts itself which makes it D)

D. it went against the ideals of freedom on which of the nation was founded

Explanation:

A paradox is something that is self-contradictory. So, whichever answer choice shows a contradiction will be the answer.

Answer choice D states that the nation was founded on the ideas of freedom. Having slaves in a nation founded on freedom is contradictory because slaves have all of their freedom taken away from them. A nation based on freedom should not have people without freedom in it.