Following the defeat of Hannibal in 202 BC during the Punic wars, the Romans determined to deprive Carthage of its most valuable possession: Hispania (the Iberian Peninsula). The defeat of Carthaginian forces by Scipio Africanus in Eastern Hispania allowed the pacification of the west, led by Consul Decimus Junius Brutus Callaicus. Decimus obtained the alliance of Olissipo (which sent men to fight alongside the Roman Legions against the northwestern Celtic tribes) by integrating it into the empire, as the ''Municipium Cives Romanorum Felicitas Julia''. Local authorities were granted self-rule over a territory that extended ; exempt from taxes, its citizens were given the privileges of Roman citizenship, and it was then integrated with the Roman province of Lusitania (whose capital was Emerita Augusta).