Throughout the Middle Ages North Germany, which is the region whereof Berlin is the capital, enjoyed relatively little prosperity, because Brandenburg, for example, lay beyond the zone of those main trade routes which, before the advent of railways, served as the arteries of the eastern trade. Not until after the opening of the Industrial Revolution in England, did that condition alter. Nor even then did a change come rapidly because of the inertia of the Russian people. Nevertheless, as the Russian railway system developed, Berlin one day found herself standing, as it were, at the apex of a vast triangle whose boundaries are, roughly, indicated by the position of Berlin itself, Petersburg, Warsaw, Moscow, Kiev, and the Ukraine. Beyond Berlin the stream of traffic flowed to Hamburg and thence found vent in America, as a terminus. Great Britain, more especially, demanded food, and food passed by sea from Odessa. Hence Russia served as a natural base for Germany, taking German manufactures and offering to Germany a reservoir capable of absorbing her redundant population. Thus it had long been obvious that intimate relations with Russia were of prime importance to Germany since all the world could perceive that the monied interests of Russia must more and more fall into German hands, because of the intellectual limitations of the Russians. Also pacification to the eastward always was an integral part of Bismarck’s policy. Notwithstanding which other influences conflicted with, and ultimately overbalanced, this eastern trend in Germany. For many thousand years before written history began, the economic capital of the world, the seat for the time being of opulence and of splendor, and at once the admiration and the envy of less favored rivals, has been a certain ambulatory spot upon the earth’s surface, at a point where the lines of trade from east to west have converged. And always the marked idiosyncrasy of this spot has been its unrest. It has constantly oscillated from east to west according as the fortunes of war have prevailed, or as the march of applied science has made one or another route of transportation cheaper or more defensible.