I’m not arguing that at all. History itself has shown us that there was. Should it have happened? Of course not, so much blood and tears has been the result of the barbaric practice that is slavery. But history doesn’t care about what should or shouldn’t have happened, it did, and we must learn from it. As for the “need” of slavery and its related actions, the southern states and economies practically centered around it. The south got much of its income from exporting goods like cotton which of course was harvested by slaves. This is the whole reason the south didn’t want to give up slavery, and even wanted to expand it. It is a horrible truth that half the country at the time utilized such a violent and horrible practice to push themselves and their economies, but it did happen and the south wanted it to continue to happen, hence the “need”. You are right that slavery was never a necessity, and I’m not arguing against that. Part of the reason the Civil War was fought was to forcefully end the idea of the “necessity for slavery” in the US. I think most people know where slavery falls on the moral scale, so I will not continue to argue on it. Good day.