By the third century, German tribes had formed themselves into federations--the Franks, Alemanni, Frisians and Saxons. The Rhine Valley, after long subjection to the Romans, had acquired houses, temples, fortresses and roads such as the Romans always built. Caesar had found many evidences of an advanced state of society. Antiquarians of our day, exploring German graves, discover signs of it in splendid weapons of war and domestic utensils buried with the dead. Monolithic sarcophagi have been found which give eloquent testimony of the absorption by them of Roman culture. Western Germany, in fact, had become, in the third century, a well-ordered and civilized land. Christianity was well established there. In general the country compared favorably with Roman England, but it was less advanced than Roman Gaul. Centers of that Romanized German civilization, that were destined ever afterward to remain important centers of German life, are Augsburg, Strasburg, Worms, Speyer, Bonn and Cologne. It was after the formation of the tribal federations that the great migratory movement from Germany set in. This gave to Gaul a powerful race in the Franks, from whom came Clovis and the other Merovingians; to Gaul also it gave Burgundians, and to England perhaps the strongest element in her future stock of men--the Saxons. Further east soon set in another world-famous migration, which threatened at times to dominate all Teutonic people--the Goths, Huns and Vandals of the Black and Caspian Sea regions. Thence they prest on to Italy and Spain, where the Goths founded and long maintained new and thriving states on the ruins of the old. Surviving these migrations, and serving to restore something like order to Central Europe, there now rose into power in France, under Clovis and Charlemagne, and spread their sway far across the Rhine, the great Merovingian and Carlovingian dynasties. Charlemagne's empire came to embrace in central Europe a region extending east of the Rhine as far as Hungary, and from north to south from the German ocean to the Alps. When Charlemagne, in 800, received from the Pope that imperial crown, which was to pass in continuous line to his successors for a thousand years, Germany and France were component parts of the same state, a condition never again to exist, except in part, and briefly, under Napoleon. The tangled and attenuated thread of German history from Charlemagne's time until now can not be unfolded here, but it makes one of the great chronicles in human history, with its Conrads and Henrys, its Maximilian, its Barbarossa, its Charles V., its Thirty Years' War, its great Frederick of Prussia, its struggle with Napoleon, its rise through Prussia under Bismarck, its war of 1870 with France, its new Empire, different alike in structure and in reality from the one called Holy and called Roman, and the wonderful commercial and industrial progress of our century.