 Complete the following phrase:  In 350 BC, Valerius was made praetor, a title which although inferior to the consulship in both prestige and imperium, was sometimes held by ex consuls in this early period in the titles history. In this year, Rome was beset by a very large army of hostile Gauls, and in reaction to this, the consul Marcus Popillius Laenas levied all young Roman men he could muster, as the Romans had a very particular fear of Gauls as a result of the 