Guns Germs and Steel 3 of 3

So far, Jared Diamond has demonstrated how geography favoured one group of people – Europeans – endowing them with agents of conquest ahead of their rivals around the world. Guns, germs and steel allowed Europeans to colonize vast tracts of the globe – but what happened when this all-conquering package arrived in Africa, the birthplace of humanity?
http://video.google.com/videoplay?docid=-3449100874735282191