 Complete the following phrase:  In early spring 217BCE, the Carthaginians crossed the Apennines unopposed, taking a difficult but unguarded route. Hannibal attempted without success to draw the main Roman army under Gaius Flaminius into a pitched battle by devastating the area they had been sent to protect. Hannibal then cut off the Roman army from Rome, which provoked Flaminius into a hasty pursuit without proper reconnaissance. Hannibal set an ambush and in the 