And prominent among those “states’ rights” was the “right” to enslave their fellow men and women.
Read actual history and learn... slavery was not the prominent factor period in the civil war.
Slavery was common all over the world in the 1800’s and since mankind started and still is today and “prominent” in the US through human trafficking especially for the elites. No one’s doing much about that.
Slavery was never abolished, it just changed over the years.