This division into ecclesiastical provinces did not develop so early in the Western Empire. In North Africa the first metropolitan appears during the 4th century, the Bishop of Carthage being recognized as primate of the dioceses of Northern Africa; metropolitans of the separate provinces gradually appear, although the boundaries of these provinces did not coincide with the divisions of the empire. A similar development was witnessed in Spain, Gaul, and Italy. The migration of the nations, however, prevented an equally stable formation of ecclesiastical provinces in the Christian West as in the East. It was only after the 5th century that such gradually developed, mostly in accordance with the ancient divisions of the Roman Empire. In Italy alone, on account of the central ecclesiastical position of Rome, this development was slower. However, at the end of antiquity the existence of church provinces as the basis of ecclesiastical administration was fairly universal in the West. In the Carolingian period they were reorganized, and have retained their place ever since.