 Complete the following phrase:  On several occasions during the third century BCE, the Roman Republic engaged in two-front conflicts while clashing with the Gauls and Etruscans to the north and also campaigning in Magna Graecia the coastal areas of Southern Italy. When Rome was enmeshed in the Second Punic War against Carthage, Hannibal, formal ally of the Sicilian city of Syracuse, intrigued with Philip V of Macedon in 215 BCE, who promptly declared 