[MN 1154. State of Europe] The extensive confederacies by which the European potentates are now at once united and set in opposition to each other, and which, though they are apt to diffuse the least spark of dissension throughout the whole, are at least attended with this advantage, that they prevent any violent revolutions or conquests in particular states, were totally unknown in ancient ages; and the theory of foreign politics, in each kingdom, formed a speculation much less complicated and involved than at present. Commerce had not yet bound together the most distant nations in so close a chain: wars, finished in one campaign, and often in one battle, were little affected by the movements of remote states: the imperfect communication among the kingdoms, and their ignorance of each other's situation, made it impracticable for a great number of them to combine in one project or effort: and above all, the turbulent spirit and independent situation of the barons or great vassals in each state gave so much occupation to the sovereign, that he was obliged to confine his attention chiefly to his own state and his own system of government, and was more indifferent about what passed among his neighbours. Religion alone, not politics, carried abroad the views of princes; while it either fixed their thoughts on the Holy Land, whose conquest and defence was deemed a point of common honour and interest, or engaged them in intrigues with the Roman pontiff, to whom they had yielded the direction of ecclesiastical affairs, and who was every day assuming more authority than they were willing to allow him. Before the conquest of England by the Duke of Normandy, this island was as much separated from the rest of the world in politics as in situation; and except from the inroads of the Danish pirates, the English, happily confined at home, had neither enemies nor allies on the continent. The foreign dominions of William connected them with the king and great vassals of France; and while the opposite pretensions of the pope and emperor in Italy produced a continual intercourse between Germany and that country, the two great monarchs of France and England formed, in another part of Europe, a separate system; and carried on their wars and negotiations, without meeting either with opposition or support from the others.