It depends somewhat on the situation and on what is meant by "conquered." Strictly speaking Roman law understood "conquered" territory only to encompass land directly controlled by an enemy city that was captured. The precise treatment of the area depended somewhat, although certain general rules applied. When a city was taken, whether it was destroyed or not, the buildings and structures of the city were considered public property, as was all farmland and claimed land surrounding it. These entered into the ager publicus and were available for public lease to citizens and Italians. The city might itself be dismantled, as Carthage was, and reduced to farmland included in the ager publicus, or like Capua reduced greatly in size. Capua is a good example of the complexity of what "conquered" means. Like many cities in Italy, Capua was not formally conquered as part of the Roman expansion into Samnium, but instead joined in alliance with the Romans peacefully--though not entirely under duress, as there was no shortage of military presence in the area--becoming civitas sine suffragio (a subject-ally without the vote) in 338. Like many cities like it Capua enjoyed relatively great independence while still, by any reasonable modern estimation, being a subject city. Capua defected to Hannibal, who wintered there, and when the city was recaptured by the Romans in 211 its status as a city was revoked, its population mostly dispersed, its boundaries greatly reduced (and the resulting land converted to ager publicus), its walls destroyed and the future expansion of the city set under strict limits. Part of the ager publicus resulting from its rather large landholdings was distributed to nearby Volturnum and Liternum, which had sided with the Romans against Capua and which were refounded as colonies--the territory of conquered cities was quite commonly distributed to friendly cities, either newly-founded colonies or sometimes refounded as colonies. Also like many hostile cities reduced to ager publicus, Capua was refounded as a colony sometime after, notably as part of Caesar's decemvirate distributions in 59. But the difficulty is that cities in newly-acquired provinces, by any reasonable description "conquered," were not necessarily considered hostile. For every Carthage there was a Utica. While their Punic cousins in Carthage suffered horribly at the hands of the Romans, Utica defected to the Roman side in the Third Punic War and was rewarded greatly, becoming the capital of the new province of Africa. Any person in his right mind would call the acquisition of Utica a conquest, as even though the city was not formally taken its defection was as much due to the threat of Roman arms as their hatred of the Carthaginians, but Roman law did not see it that way. The city was never stormed; it had not taken up arms against the Roman people.