A racist person as an IQ so low that he is capable of accepting illogical, completely fallacious rationalization, but is also dangerous in that this rationalization serves to justify racism.
So there no point in explaining anything to him, and rather, you can hope like me that destiny will do the job it always does and watch how his life turns out later...
For your own sake however: Black people are the first human civilization. When Homos Sapiens got rid of its hairy body, skin pigmentation took centuries even millenaries of being exposed to hot sun in the current African and Middle-Eastern regions.
When nomads started to settle instead of constantly moving, that's when the first generation of brown people emerged. And out of those first settlement came out the first advanced rituals, languages, socio-structures etc...
White people however, didn't exist until late in Human History, and didn't get civilized until the first northern barbaric tribes got separated from the rest of the European region (nothing to do with the Borealis BS), and then after the Church fell after the crusades in central Europe.
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Now why dies Africa and its people seem to be less advanced? Because out of the many regions that were independent and uncolonized in the world, Africa is still the most sought for, controlled and corrupted land of modern colonization, called neo-colonization: when European countries stopped colonizing, it was only after harsh negotiation with local presidents and generals through which they not only put the seeds of destabilization but also immigration.
Unlike colonization, where your army and people are visible, which is costly in infrastructure, and cause conflicts because the responsible guy is obvious, neo-colonization consist in financing, arming and assisting the most extreme or corrupted government, which in turn have for order to maintain their country in fear, lack of education or infrastructure to prevent them from rebelling, while (mainly western, and more and more eastern) company get juicy contracts with the same government to steal mineral, coil, oil, gaz etc...ressources at no cost while retaining 99% of its riches.
The result is that there is far less education possible in Africa, and the indirect but fallacious result being that they'd have lower IQ (which is Bell's racist theory using fake stats and approximation).
As for Nobel Prize, it's like saying there are less black american president in the US, completely ignoring the segregating and slavery past of the US making it only possible today, and for the first time, for there to be a black president, although racism still continues.