The revolution of 1848, unsuccessful in its national purpose, prepared the subsequent victories of nationality in two ways. The first of these was the restoration of the Austrian power in Italy, with a new and more energetic centralisation, which gave no promise of freedom. Whilst that system prevailed, the right was on the side of the national aspirations, and they were revived in a more complete and cultivated form by Manin. The policy of the Austrian Government, which failed during the ten years of the reaction to convert the tenure by force into a tenure by right, and to establish with free institutions the condition of allegiance, gave a negative encouragement to the theory. It deprived Francis Joseph of all active support and sympathy in 1859, for he was more clearly wrong in his conduct than his enemies in their doctrines. The real cause of the energy which the national theory has acquired is, however, the triumph of the democratic principle in France, and its recognition by the European Powers. The theory of nationality is involved in the democratic theory of the sovereignty of the general will. "One hardly knows what any division of the human race should be free to do, if not to determine with which of the various collective bodies of human beings they choose to associate themselves."[330] It is by this act that a nation constitutes itself. To have a collective will, unity is necessary, and independence is requisite in order to assert it. Unity and nationality are still more essential to the notion of the sovereignty of the people than the cashiering of monarchs, or the revocation of laws. Arbitrary acts of this kind may be prevented by the happiness of the people or the popularity of the king, but a nation inspired by the democratic idea cannot with consistency allow a part of itself to belong to a foreign State, or the whole to be divided into several native States. The theory of nationality therefore proceeds from both the principles which divide the political world,--from legitimacy, which ignores its claims, and from the revolution, which assumes them; and for the same reason it is the chief weapon of the last against the first.