Guns, Germs and Steel.

I just watched most of the 3 part of “Guns Germs and Steel”: Based on the 1997 Jared Diamond book “by the same name”:
For the most part, I enjoyed it. I do agree with some of the negative reviews, They kept hammering the same points over and over again – each segment could have been 20, instead of 60, minutes long. The one question it left me with was this: If south africa has almost the same climate as the fertile cresent, why didn’t they end up with the same advantages as the Europeans?