Did natural selection made Black Americans a super race?
your experience appears to be at odds with reality genetics does tend to give certain groups of genetically similar people a higher probability of being able to excel in specific areas certainly black americans have a statistical advantage in jumping and sprinting black northern africans tend (on average, not every individual) to be good distance runners in the more mental skills, it is much more difficult to define ability but here black americans are at a statistical disadvantage now the argument nature vs nurture can certainly come into this but a realistic look will confirm the studies and college test scores and performance so, every genetic group has certain things that they have a better chance of excelling at the 300 years of enslavement you talk about was not near that long for the average slave family because new slaves were being brought from africa for the first 200 or so even 300 years is very very short by evolutionary standards
