&gt;\&gt;given that sprinters all come from a specific location in West Africa where a very large pool of people receive world class training for such an event.  
&gt;  
&gt;This is incorrect. All world class sprinters bar a handful have heritage than can be traced back to West Africa, but the vast majority of them were raised and trained in the USA, plus Jamaica/the rest of the Caribbean/UK/France.  
&gt;  
&gt;Whereas cultural factors are undoubtedly the overwhelming reason for perceived differences in ability in humanity, sprinting appears to be, objectively, one of the exceptions.  
&gt;  
&gt;The same applies to distance running, where the elite genes seems to be concentrated in a few small areas of east Africa. Even other Kenyans look at the Kalenjin as otherworldly in their ability to run long distances at high speed.