The Roman empire of the fourth and early fifth centuries remained, as it had always been, city-based, with political, religious and aristocratic life revolving around the civitates and around major capitals. Although their importance remained unchanged, the cities of the late empire differed in several obvious ways from the cities of the earlier Roman world. The three changes, in the political, military and religious role of the cities had a marked effect on the politics of city life and on the way that the aristocracy played out its role within the cities. The fourth to sixth centuries saw the decline of the centuries-old ideal of the classical city governing the patterns of local political life and spending. These centuries also saw the gradual emergence of a 'new' city, playing an important part within the overall administrative, financial and military structures of church and state, and increasingly focused on a Christian ideology of saints and their churches.