LOL...good line.
At one time was not the entire Americas part of the trans Atlantic slave trade...even Canada?
Not counting the indig slaving, but that's another thread
shame how so many folks under middle aged think slavery is the worst thing ever foisted on mankind...for some it's turned out to be a blessing.
I suspect there were a few black slaves in French Canada, but they would hardly have been common. French Louisiana, of course, was another story.
One statistic you may not be familiar with: Of all the slaves transported across the Atlantic during the black slave trade, only about 10% were taken to what is now the United States. 90% went to Brazil and the Caribbean. The slaves in these areas had a much shorter average life, as the closer distance to Africa made them cheaper to replace than to maintain. Slaves in America were more expensive due to distance and "shipping losses," and were therefore on average much better treated.
IL, OH and IN never had slaves, as the Northwest Ordinance (passed by the Confederation) banned slaves from settling in the territories that later became these states. Same is true of MI and other states that were entirely or in part included in this area.
This Ordinance, of course, was passed when even southerners still agreed that slavery was a bad thing and the only question was how to get rid of it. Over the decades after about 1820, the South gradually developed an ideology of slavery as a positive good, which would have made the southern founders imitate a lathe. The proponents of this racist and inherently anti-democratic ideology were the most forceful proponents of secession.