Good thing a European invented the camera to take this picture, so we could marvel at the progress of sub Saharan infrastructure, after their tens of thousands of years in habitation. Thankfully the drivers there are armed with good rifles, Mauser or Lee-Enfield I'm guessing. I'm also glad you've brought the African slave trade to bear. Thank you.
The OP might like to know of the 10,000,000 slaves who survived their journey between 1525 and 1866, only 388,000 were destined for the US. http://www.pbs.org/wnet/african-amer...ded-in-the-us/
Europe did not have a monopoly on slavery. Muslim traders also exported as many as 17 million slaves to the coast of the Indian Ocean, the Middle East, and North Africa. http://news.bbc.co.uk/2/hi/africa/1523100.stm
Its unknown just how many African slaves remained in Africa for the Africans. The African slave trade predates Europeans opening the Atlantic side. It seems safe to assume, given the same period, most slaves weren't taken by Muslims or Europeans, but by other tribes and kingdoms. So I'm even less sorry now, than not sorry at all for American slavery. I have negative sorries to give you OP. Not only are the horrors of antebellum slavery overblown, but African Americans still came out ahead of many of their kinsmen who remained.
I couldn't find the number of free men the Atlantic took in the same period as the 2,000,000 slaves who perished. Just how many of those ships were all hands lost? Those numbers would be great to have. Let's honor every man who made and lost his life at sea. We still lose crews in the US, but nobody gives them a month of celebrity. We still have slavery in the world, but instead of snuffing out slavery today, we devote a month to pitty partying for the blacks with the most opportunities at their finger tips.
I also couldn't find African Americans cursing the descendants of those Africans, who burned their villages and sold them off to foreigners. Nothing of African Americans demanding reparations from those countries' governments. It was their own closest kinsmen who uprooted them, miss me with those wubs you give for slaves destined for slavery 200 years ago. I'd say by obesity rates their progeny are fat and happy now.
Debt: paid