Not sure if serious.
That's probably because in Africa that actually have more important things to concentrate than playing sports all day...
You see people like Francis in mma and really believe that's their not thousands of athletes like him in Africa.. I mean he said himself there's alot of them there.
Now to you slave theory. Do you know how long it takes for genetics to change or evolve through animals and humans? I can tell you it takes more that a few hundred years.
You don't know what your talking about lol.
The superhuman slave theory is suspect to say the least, and has all sorts of holes in it.
But your understanding of genetics is pretty sketchy. Natural selection and intentional breeding are two very different things. There's a reason why champion race horses command massive stud fees. Same for racing or fighting dogs, fighting cocks, and bucking bulls.
That's not even getting into the fact that humans have bread toy poodles and pit bulls and chihuahua's and great danes and wiener dogs and bloodhounds and on and on all from essentially the same species of canine.
Give me a couple of thousand people, zero ethics, and a hundred years and you better believe I could "breed" you some impressive super humans.
The very thought of "breeding" humans as livestock is sickening, though. And talking about it like "it has it's benefits" is even more sickening.
It's also not the best explanation for what is likely happening with Black Athletes in North America. The best explanation is that like everything else, at the mean we're all bunched together really closely. But at the extremes, there are these genetic markers that are not truly racial so much as they are familial/ancestral.
The Kalenjin tribe in Kenya and their distance running dominance are the best case study in this:
Best quote from the article:
"There are 17 American men in history who have run under 2:10 in the marathon," Epstein says. "There were 32 Kalenjin who did it in October of 2011."
Other than as a correlative factor (Kalenjins happen to be black) race doesn't even enter into it. It's just a small group of people with a common ancestry that makes them more suited to the task.
That's almost certainly what is happening with the dominance of black athletes in North American sport. The difference is that black Americans are part of a diaspora, meaning that most have no solid concept of their ancestral heritage other than that they are from the continent of Africa. If we knew exactly where the families of these athletes were kidnapped from, we'd likely have a much better understanding of their athletic prowess than "Of course he's good at sports; he's black!"