I like your plan.
On the basis that someone mentioned the Aztecs:
(thanks Sancho - though wasn't Cortez aided by disease in his 'campaign' against the Aztecs) this of course brings to mind the following little number http://www.youtube.com/watch?v=nBCjFlYVHls
and also reminds us of those other great South American race the Incas in which case surely we must mentioned Patchacuti, who would probably have kicked Cortez's bottom which leads neatly on to this little number... http://www.youtube.com/watch?v=51aHb_U8Zr0
and let's not forget the Roman Emperor smackdown, which has already been solved http://www.youtube.com/watch?v=w-Nh-zSMzqo

