not the ones born in the US, which, off the top of my head, was the vast majority of the slave population. If I remember correctly, slaves stopped being imported from Africa around 1820, give or take a few years (you can look it up, it was in the constitution), but the trade continued in the US, so it's safe to assume (again, I don't have actual numbers on me) that most of the slaves were born in the the US by the time slavery was abolished