Why did the war begin between Rome and Carthage? Why did Hannibal decide to invade Italy?

Why did the war begin between Rome and Carthage? Why did Hannibal decide to invade Italy? Who helped Hannibal’s troops? What striking personality traits did Hannibal have?

The ancient Romans were a warlike people. They conquered Italy and swung at the island of Sicily. Here their interests intersected with the interests of Carthage. A war broke out between them. Warlord Hannibal made a bold move. He decided to cross the Alps and strike at the Romans. And so it happened. Having crossed the Alps, Hannibal lost half of the army, but he was helped by the Gauls who were at war with Rome. Hannibal proved to be a brave, intelligent, purposeful commander. But, however, he could not defeat the Romans.

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