Yes, this is true. Its easy for people to say blacks didn't "evolve", but when humans first left Africa, all new completely different challenges awaited them. Modern humans from Africa and all their descendants were the only ones to survive. It took millennia, but it was the challenges they overcame that gave them the edge over all other hominid groups. The ones that stayed in paradise never had to worry until time caught up with them.
It's also genetic. Non-blacks have some Neanderthal DNA (which were smart), so they are genetically different from blacks.
Yes, this is true. Its easy for people to say blacks didn't "evolve", but when humans first left Africa, all new completely different challenges awaited them. Modern humans from Africa and all their descendants were the only ones to survive. It took millennia, but it was the challenges they overcame that gave them the edge over all other hominid groups. The ones that stayed in paradise never had to worry until time caught up with them.