But we note--the fatal mark in all German history--that the unity is not complete. The ten millions of Austrian Germans were, when Prussia achieved this her highest ambition, deliberately left outside the new German Empire. And this was done because, in Prussian eyes, a so-called "German unity" was but a means to an end, and that end the aggrandizement of the Hohenzollern dynasty. To include so many southern and Catholic Germans would have endangered the mastery of Berlin. The fact that Austria ruled a number of non-German subjects far larger than her Austrian population would further have endangered the Hohenzollern position had Austria been admitted to the new German Empire, and had the consolidation of all Germans into one true state been really and loyally attempted. Lastly, it would have been impossible to destroy the historic claims to leadership of the Imperial Hapsburgs, and that, more than anything else, was the rivalry the Hohenzollerns dreaded. Once more had the Germans proved themselves incapable of, and unwilling to submit to, the discipline of unity. What part, then, was Austria, thus left out, to play in the international activity of Prussia in the future? What part especially was she to play when Prussia, at the head of Northern Germany, should go out to impose the will of that Germany and of herself upon the rest of the world? That is the next question we must answer before we can hope to understand the causes of the present war in their entirety. (4) AUSTRIA. Austria, or, more strictly speaking, the Austro-Hungarian Empire, means no more than the congeries of States governed each separately and all in combination by the head of the House of Hapsburg-Lorraine. Of these various States only one is German-speaking as a whole, and that is the Austrian State proper, the "Eastern States" (for that is what the word "Austria" originally meant) which Christendom erected round the Roman and Christian frontier town of Vienna to withstand the pressure of the heathen Slavs and Mongol Magyars surging against it upon this frontier. The complexity of the various sections which make up the realm of the present Emperor Francis Joseph, the present head of the House of Hapsburg-Lorraine, would be only confusing if it were detailed in so general a description as this. We must be content with the broad lines of the thing, which are as follows:-- [Illustration: Sketch 3.]