Just because there is an entire Dark Continent with a billion people who never discovered the wheel is no reason to doubt their ability to engineer nuclear fusion powerplants or interstellar starships.
Do a search on YouTube for this crazy (or maybe not so crazy) black pastor David Manning and see what he has to say on the subject. "You don't find no cities in Africa that are 500 years old" is a common theme for his rants, and I remember one speech that was titled: "Black people never built a seaworthy ship!"
Or even a drainage ditch.
You're confusing "wheellessness" with the Noble Savages found in N&S America.