While the revolution in natural science was only able to be completely carried out in proportion as investigation furnished the necessary positive material, there were known a multitude of earlier historical facts which gave a distinct bias to the philosophy of history. In 1831 in Lyons the first purely working class revolt occurred. The first national working class movement, that of the English Chartists, reached its height between 1838 and 1842. The class war between the proletariat and the bourgeoisie proceeded historically in the most advanced European countries just in proportion as the newly developed greater industry has progressed, on the one hand, and the political power of the bourgeoisie on the other. The teachings of the bourgeois economists with respect to the identity of the interests of capital and labor and with respect to the universal peace and well being which would follow as a matter of course from the adoption of free trade were more and more contradicted by facts. All these things could be as little ignored as the French and English socialism which was their theoretical though very insufficient expression. But the old idealistic philosophy of history which was as yet by no means laid aside knew nothing of class wars dependent upon material interests, and nothing of material interests, specially. Production, like all economic phenomena only occupied a subordinate position as a secondary element of the "history of civilisation." The new facts, moreover rendered necessary a new investigation of all preceding history and then it became evident that all history up to then had been a history of class struggles and that these mutually conflicting classes are the results of a given method of production and distribution at a given period, in a word, of the economic conditions of that epoch. Hence, that the economic structure of society at a given time furnishes the real foundations upon which the entire superstructure of political and juristic institutions as well as the religious, philosophical and other abstract notions of a given period are to be explained in the last instance. Idealism was thereupon driven from its last refuge, the philosophy of history; a materialistic philosophy of history was set up, and the path was discovered by which the consciousness of man could be shown as springing from his existence rather than his existence from his consciousness.