Still the Imperial coronation of Charles is one of the great landmarks both of history and of historical geography. The whole political system of Europe was changed when the Old Rome cast off its formal allegiance to the New, and chose the King of the Franks and Lombards to be Emperor of the Romans. Though the powers of Charles were not increased nor his dominions extended, he held everything by a new title. ♦Final division of the Empire.♦ The Roman Empire was divided, never to be joined together again. But its Western half now took in, not only the greatest of its lost provinces, but vast regions which had never formed part of the Empire in the days of Trajan himself. Again, the distinctive character of the older Roman Empire had been the absence of nationality. The whole civilized world had become Rome, and all its free inhabitants had become Romans. ♦Growing nationality of the two Empires, German and Greek.♦ But from this time each of the two divisions of the Empire begins to assume something like a national character. East and West alike remained Roman in name and in political traditions. The Old Rome was the nominal centre of one; the New Rome was both the nominal and the real centre of the other. But there was a sense in which both alike ceased from this time to be Roman. The Western Empire has passed to a German king, and later changes tended to make his Empire more and more German. The Eastern Empire meanwhile, by the successive loss of the Eastern provinces, of Latin Africa, and of Latin Italy, became nearly conterminous with those parts of Europe and Asia where the Greek speech and Greek civilization prevailed. From one point of view, both Empires are still Roman; from another point of view, one is fast becoming German, the other is fast becoming Greek. ♦Rivalry of the two Empires.♦ And the two powers into which the old Roman Empire is thus split are in the strictest sense two Empires. They are no longer mere divisions of an Empire which has been found to be too great for the rule of one man. The Emperors of the East and West are no longer Imperial colleagues dividing the administration of a single Empire between them. They are now rival potentates, each claiming to be exclusively the one true Roman Emperor, the one true representative of the common predecessors of both in the days when the Empire was still undivided.
♦The two Caliphates.♦
It is further to be noted that the same kind of change which now happened to the Christian Empire, had happened earlier in the century to the Mahometan Empire. The establishment of a rival dynasty at Cordova, even though the assumption of the actual title of Caliph did not follow at once, was exactly analogous to the establishment of a rival Empire in the Old Rome. The Mediterranean world has now four great powers, the two rival Christian Empires, and the two rival Mahometan Caliphates. Among these, it naturally follows that each is hostile to its neighbour of the opposite religion, and friendly to its neighbour’s rival. The Western Emperor is the enemy of the Western Caliph, the friend of the Eastern. ♦Rivalry of the Empires and Caliphates.♦ The Eastern Emperor is the enemy of the Eastern Caliph, the friend of the Western. Thus the four great powers stood at the beginning of the ninth century. And it was out of the dismemberments of the two great Christian and the great Mahometan powers that the later states, Christian and Mahometan, of the Mediterranean world took their rise.
♦Extent of the Carolingian Empire.♦
It is a point of geographical as well as of historical importance that Charles the Great, after he was crowned Emperor, caused all those who had been hitherto bound by allegiance to him as King of the Franks to swear allegiance to him afresh as Roman Emperor. This marks that all his dominions, Frankish, Lombard, and strictly Roman, are to be looked on as forming part of the Western Empire. Thus the Western Empire now took in all those German lands which the old Roman Emperors never could conquer. Germany became part of the Roman Empire, not by Rome conquering Germany, but by Rome choosing the German king as her Emperor. ♦Contrast of its boundaries with those of the elder Empire.♦ The boundaries of the Empire thus became different from what they had ever been before. Of the old provinces of the Western Empire, Britain, Africa, and all Spain save one corner, remained foreign to the new Roman Empire of the Franks. But, on the other hand, the Empire now took in all the lands in Germany and beyond Germany over which the Frankish power now reached, but which had never formed part of the elder Empire. ♦Conquest of Saxony. 772-804.♦ The long wars of Charles with the Saxons led to their final conquest, to the incorporation of Saxony with the Frankish kingdom, and, after the Imperial coronation of the Frankish king, to its incorporation with the Western Empire.
The conquests of Charles had thus, among their other results, welded Germany into a single whole. For though the Franks had long been the greatest power in Germany, yet Germany could not be said to form a single whole as long as the Saxons, the greatest people of Northern Germany, remained independent. The conquest of Saxony brought the Frankish power for the first time in contact with the Danes and the other people of Scandinavia. ♦Boundary of the Eider.♦ The dominions of Charles took in what was then called Saxony beyond the Elbe, that is the modern Holstein, and the Eider was fixed as the northern boundary of the Empire. More than one Danish king did homage to Charles and to some of the Emperors after him; but Denmark was never incorporated with the Empire or even made permanently dependent. ♦Slavonic allies and neighbours.♦ To the east, the immediate dominions of Charles stretched but a little way beyond the Elbe; but here the Western Empire came in contact, as the Eastern had done at an earlier time and by a different process, with the widely spread nations of the Slavonic race. The same movements which had driven one branch of that race to the south-west had driven another branch to the north-west, and the wars of Charles in those regions gave his Empire a fringe of Slavonic allies and dependents along both sides of the Elbe, forming a barrier between the immediate dominions of the Empire and the independent Slaves to the east. ♦Overthrow of the Avar kingdom. 796.♦ To the south Charles overthrew the kingdom of the Avars; he thus extended his dominions on the side of south-eastern Germany, and here he came in contact with the southern branch of the Slaves, a portion of whom, in Carinthia and the neighbouring lands, became subjects of his Empire. ♦The Spanish March. 778.♦ In Spain he acquired the north-eastern corner as far as the Ebro, forming the Spanish March, afterwards the county of Barcelona.
♦Divisions of the Empire.♦
Thus the new Western Empire took in all Gaul, all that was then Germany, the greater part of Italy, and a small part of Spain.[7] It thus took in both Teutonic and Romance lands, and contained in it the germs of the chief nations of modern Europe. It was a step towards their formation when Charles, following the example both of earlier Roman Emperors and of earlier Frankish kings, planned several divisions of his dominions among his sons. Owing to the deaths of all his sons but one, none of these divisions took effect. And it should be noticed that as yet none of these schemes of division agreed with any great natural or national boundary. They did not as yet foreshadow the division which afterwards took place, and out of which the chief states of Western Europe grew. In two cases only was anything like a national kingdom thought of. ♦Kingdom of Aquitaine.♦ Charles’s son Lewis reigned under him as king in Aquitaine, a kingdom which took in all Southern Gaul and the Spanish March, answering pretty nearly to the lands of the Provençal tongue or tongue of Oc. ♦Death of Charles. 814.♦ And when Charles died, and was succeeded in the Empire by Lewis, Charles’s grandson Bernard still went on reigning under his uncle as King of Italy. ♦Kingdom of Italy.♦ The Kingdom of Italy must be understood as taking in the Italian mainland, except the lands in the south which were held by the dependent princes of Beneventum and by the rival Emperors of the East. ♦Use of the name Francia.♦ During this period Francia commonly means the strictly Frankish kingdoms, Gaulish and German. The words Gallia and Germania are used in a strictly geographical sense.