This last set of causes are those which specially distinguish the histories of eastern and of western Europe; a set of causes which, though exactly twelve hundred years old,[5] are still fresh and living, and which are the special causes which have aggravated the special difficulties of the last five hundred years. In Western Europe, though we have had plenty of political conquests, we have had no national migrations since the days of the Teutonic settlements--at least, if we may extend these last so as to take in the Scandinavian settlements in Britain and Gaul. The Teuton has pressed to the East at the expense of the Slave and the Old-Prussian: the borders between the Romance and the Teutonic nations in the West have fluctuated; but no third set of nations has come in, strange alike to the Roman and the Teuton and to the whole Aryan family. As the Huns of Attila showed themselves in western Europe as passing ravagers, so did the Magyars at a later day; so did the Ottoman Turks in a day later still, when they besieged Vienna and laid waste the Venetian mainland. But all these Turanian invaders appeared in western Europe simply as passing invaders; in eastern Europe their part has been widely different. Besides the temporary dominion of Avars, Patzinaks, Chazars, Cumans, and a crowd of others, three bodies of more abiding settlers, the Bulgarians, the Magyars, and the Mongol conquerors of Russia, have come in by one path; a fourth, the Ottoman Turks, have come in by another path. Among all these invasions we have one case of thorough assimilation, and only one. The original Finnish Bulgarians have, like Western conquerors, been lost among Slavonic subjects and neighbors. The geographical function of the Magyar has been to keep the two great groups of Slavonic nations apart. To his coming, more than to any other cause, we may attribute the great historical gap which separates the Slave of the Baltic from his southern kinsfolk. The work of the Ottoman Turk we all know. These latter settlers remain alongside of the Slave, just as the Slave remains alongside of the earlier settlers. The Slavonized Bulgarians are the only instance of assimilation such as we are used to in the West. All the other races, old and new, from the Albanian to the Ottoman, are still there, each keeping its national being and its national speech. And in one part of the ancient Dacia we must add quite a distinct element, the element of Teutonic occupation in a form unlike any in which we see it in the West, in the shape of the Saxons of Transsilvania. We have thus worked out our point in detail. While in each Western country some one of the various races which have settled in it has, speaking roughly, assimilated the others, in the lands which are left under the rule of the Turk, or which have been lately delivered from his rule, all the races that have ever settled in the country still abide side by side. So when we pass into the lands