composing the state begin to consider themselves as one. This is the general history of the rise of all empires whose records have been transmitted to us.[56] An inferior race, by falling into the hands of vigorous masters, is thus called to share a destiny, of which, alone, it would have been incapable. Witness the Saxons by the Norman conquest.[57] But, if there is a decided disparity in the capacity of the two races, their mixture, while it ennobles the baser, deteriorates the nobler; a new race springs up, inferior to the one, though superior to the other, and, perhaps, possessed of peculiar qualities unknown to either. The modification of the ethnical character of the nation, however, does not terminate here. Every new acquisition of territory, by conquest or treaty, brings an addition of foreign blood. The wealth and splendor of a great empire attract crowds of strangers to its capital, great inland cities, or seaports. Apart from the fact that the conquering race--that which founds the empire, and supports and animates it--is, in most cases, inferior in numbers to the masses which it subdued and assimilated; the conspicuous part which it takes in the affairs of the state, renders it more directly exposed to the fatal results of battles, proscriptions, and revolts.[58] In some instances, also, it happens that the substratum of native populations are singularly prolific--witness the Celts and Sclaves. Sooner or later, therefore, the conquering race is absorbed by the masses which its vigor and superiority have aggregated. The very materials of which it erected its splendor, and upon which it based its strength, are ultimately the means of its weakness and destruction. But the civilization which it has developed, may survive for a limited period. The forward impulse, once imparted to the mass, will still propel it for a while, but its force is continually decreasing. Manners, laws, and institutions remain, but the spirit which animated them has fled; the lifeless body still exhibits the apparent symptoms of life, and, perhaps, even increases, but the real strength has departed; the edifice soon begins to totter, at the slightest collision it will crumble, and bury beneath its ruins the civilization which it had developed.