By creating another frontline for Germany, the Allies basically forced Germany to split up their forces, weakening their already losing campaign against the Soviets.
"A. Invading Iraq would divert attention and resources from the goal of destroying al-Qaeda." describes the arguments that were made against President Bush's decision to invade Iraq in 2003. ~Hope this helped :)
Jose de San Martin, Simon Bolivar and Toussiant L'Ouverture were all leaders in South America for independence from European colonizers. So leave it to be Nopoleon was NOT a leader in South America.
