After the death of Sulla, Gaius Cæsar was sent as prætor into Spain with power to make war wherever it was needful. All of those Spaniards who were doubtful in their allegiance, or had not yet submitted to the Romans, he
brought under subjection by force and arms. Some, who afterwards rebelled, were subdued by his adopted son Octavius,
surnamed Augustus. From that time it appears that
the Romans have divided Iberia (which they now call Hispania) into three parts and sent a praetor to govern each, two being chosen annually by the Senate, and the third appointed by the emperor to hold office during his pleasure.