How might Claudius argue that giving citizen and high office to conquer Gauls be good for Rome?

Claudius argue that giving citizen and high office to conquer Gauls be good for Rome in a way that he viewed empire as citzenship oreinted structure were all who wanted cooperate with Rome could be granted citizenship for exemple he veiwed downfall of Athens in a way that Athenians did not wanted to include foreigenrs fully oto their society