All history is the story of a struggle between classes; the history of the present is the story of the struggle between the middle class and the proletariat. The making of classes results from certain economic conditions of production and distribution, through which also social control is determined. "Immanent" forces (the expression does not occur in the "Communistic Manifesto," but becomes later a technical term) constantly revolutionise the conditions of production, and thus of all economic matters. In our time this organic change is accomplished with especial quickness, because the tremendous forces of production created by the middle class grow too fast. Thus on the one side the conditions of existence under the present capitalistic economy quickly deteriorate; upon the other side the conditions of existence tend to a social organisation without classes upon a basis of common production and communal ownership of the means of production (this formula, also, is not found in the "Communistic Manifesto," in which merely the abolition of private property is presented; but our phrase first occurs two years later, in the history of class struggle in France). This deterioration appears in the crises in which society feels itself "suddenly thrown back into a condition of momentary barbarism," and in the emergence of pauperism in which it plainly appears now "that the middle class is unfit longer to remain the ruling class of society and to enforce the life condition of itself as the ruling law; it is unfit to rule because it is incapable of securing subsistence to its slave within the terms of his slavery, because it is compelled to let him sink into a position in which it must support him instead of being supported by him." But the conditions of the new social order (this thought also is merely suggested in the "Communistic Manifesto" and only later, especially by Engels, is it developed) are created by an enormous increase of the forces of production and by the "communisation of the processes of production" which goes hand in hand with this increase--that is, the interweaving and combination of the individual acts of production, and transition to co-operative methods, etc. The most important consequence now for our question is this: the economic revolution finds its spontaneous expression in opposition and struggle of classes, the "modern social movement"--that is, the movement of the proletariat is nothing but the organisation of those elements of society which are called to break the rule of the middle class and "to conquer the new social forces of production." This they can accomplish only by "abolishing their own private appropriation as it has thus far existed and with it the whole idea of private property"; that is, in place of private possession and private production to establish communism.