There was another cause, besides those palpable and obvious ones already enumerated, to which this state of things must be ascribed. That cause is to be found in the theory which regarded the Empire as an international power, supreme among Christian states. From the day when Otto the Great was crowned at Rome, the characters of German king and Roman Emperor were united in one person, and it has been shewn how that union tended more and more to become a fusion. If the two offices, in their nature and origin so dissimilar, had been held by different persons, the Roman Empire would most probably have soon disappeared, while the German kingdom grew into a robust national monarchy. Their connection gave a longer life to the one and a feebler life to the other, while at the same time it transformed both. So long as Germany was only one of the many countries that bowed beneath their sceptre it was possible for the Emperors, though we need not suppose they troubled themselves with speculations on the matter, to distinguish their imperial authority, as international and more than half religious, from their royal, which was, or was meant to be, exclusively local and feudal. But when within the narrowed bounds of Germany these international functions had ceased to have any meaning, when the rulers of England, Spain, France, Denmark, Hungary, Poland, Italy, Burgundy, had in succession repudiated their control, and the Lord of the World found himself obeyed by none but his own people, he would not sink from being lord of the world into a simple Teutonic king, but continued to play in the more contracted theatre the part which had belonged to him in the wider. Thus did Germany instead of Europe become the sphere of his international jurisdiction; and her electors and princes, originally mere vassals, no greater than a Count of Champagne in France, or an Earl of Chester in England, stepped into the place which it had been meant that the several monarchs of Christendom should fill. If the power of their head had been what it was in the eleventh century, the additional dignity so assigned to them might have signified very little. But coming in to confirm and justify the liberties already won, this theory of their relation to the sovereign had a great though at the time scarcely perceptible influence in changing the German Empire, as we may now begin to call it, from a state into a sort of confederation or body of states, united indeed for some of the purposes of government, but separate and independent for others more important. Thus, and that in its ecclesiastical as well as its civil organization, Germany became a miniature of Christendom[357]. The Pope, though he retained the wider sway which his rival had lost, was in an especial manner the head of the German clergy, as the Emperor was of the laity: the three Rhenish prelates sat in the supreme college beside the four temporal electors: the nobility of prince-bishops and abbots was as essential a part of