Friedrich Engels: The economic facts, which have so far played no role or only a contemptible one in the writing of history, are, at least in the modern world, a decisive historical force; that they form the basis of the origination of the present-day class antagonisms; that these class antagonisms, in the countries where they have become fully developed, thanks to large-scale industry, hence especially in England, are in their turn the basis of the formation of political parties and of party struggles, and thus of all political history. Marx had not only arrived at the same view, but had already, in the Deutsche-Französische Jahrbücher (1844), generalized it to the effect that, speaking generally, it is not the state which conditions and regulates the civil society at all, but civil society which conditions and regulates the state, and, consequently, that policy and its history are to be explained from the economic relations and their development, and not vice versa. https://wordsmith.social/protestation/quotes#quote4568