Identify and describe primary differences between Carthage and Rome-Essay

Why are the Romans more successful that the Carthaginians?
source for it is : this link: { http://cuwhist.wordpress.com/worldviews-hist-103/primary-sources-reader/ ]
followed by clicking on the “Classical World”, then ( page.62-72 {Polybius, The Histories} )

Second Question is :-
2) How did the developments described in these readings undermine the medieval world and lay the foundations for the modern world?
Source is : {http://cuwhist.wordpress.com/worldviews-hist-103/primary-sources-reader/ }
in the “Medieval World” [Froissart, Chronicles, P.199-200] and [Boccaccio, The Decameron, P.200-205]