How did hannibal lose the second punic war?

Hannibal first gets into Spain and then crossed over the Alps of southern France and Italy. Romans weren’t prepared for this attack on Italy. Hannibal on the other side was fully prepared to take account of Rome.  Carthaginians have trained their elephants to fight in a war.  

Romans were defeated also because of their odd way of electing generals and end the war. His name was Scipio Africanus.

Explanation:

Hannibal first gets into Spain and then crossed over the Alps of southern France and Italy. Romans weren’t prepared for this attack on Italy. Hannibal on the other side was fully prepared to take account of Rome.  Carthaginians have trained their elephants to fight in a war.  

Romans were defeated also because of their odd way of electing generals who took decisions about each and everything. Each Roman consul is actually the Supreme commander of his army and both decide who will be in charge and for what days. Hannibal knows about the temperament of Sempronius thus taking advantage of that situation.  

This second Punic war happened to be so famous because of the blood oaths and vengeance, rivalry from two houses, and because of the war has passed down to father to his son. And two bloodlines were vying for the fate of world history.

a big one is

to appoint and regulate officers of the land and naval forces,

which caused much controversy ending the articles

a because the britsh thought the ameracans were trators so a