hich they bound themselves to send guides to meet the Carthaginian
army, to procure for it a good reception from the cognate tribes and
supplies along its route, and to rise against the Romans as soon as
it should set foot on Italian ground. In fine, the relations of Rome
with the east led the Carthaginians to this same quarter. Macedonia,
which by the victory of Sellasia had re-established its sovereignty
in the Peloponnesus, was in strained relations with Rome; Demetrius of
Pharos, who had exchanged the Roman alliance for that of Macedonia
and had been dispossessed by the Romans, lived as an exile at the
Macedonian court, and the latter had refused the demand which the
Romans made for his surrender. If it was possible to combine the
armies from the Guadalquivir and the Karasu anywhere against the
common foe, it could only be done on the Po. Thus everything directed
Hannibal to Northern Italy; and that the eyes of his father had
already been turned to that quarter, is shown by the reconnoitring
party of Carthaginians, whom the Romans to their great surprise
encountered in Liguria in 524.

The reason for Hannibal's preference of the land route to that by sea
is less obvious; for that neither the maritime supremacy of the Romans
nor their league with Massilia could have prevented a landing at
Genoa, is evident, and was shown by the sequel. Our authorities fail
to furnish us with several of the elements, on which a satisfactory
answer to this question would depend, and which cannot be supplied by
conjecture. Hannibal had to choose between two evils. Instead of
exposing himself to the unknown and less calculable contingencies of
a sea voyage and of naval war, it must have seemed to him the better
course to accept the assurances, which beyond doubt were seriously
meant, of the Boii and Insubres, and the more so that, even if the
army should land at Genoa, it would still have mountains to cross;
he could hardly know exactly, how much smaller are the difficulties
presented by the Apennines at Genoa than by the main chain of the
Alps. At any rate the route which he took was the primitive Celtic
route, by which many much larger hordes had crossed the Alps: the
ally and deliverer of the Celtic nation might without temerity
venture to traverse it.

Departure of Hannibal

So Hannibal collected the troops, destined for the grand army, in
Cartagena at the beginning of the favourable season; there were 90,000
infantry and