The stage of the development of the productive forces determines the political and ideological superstructure of society which are crystallized into a system of social organization.

Because capitalist society has expanded the productive forces so enormously, the social conditions under which it arose lag behind and become fetters holding back the further growth of productive forces.

The social system grows rigid but the productive forces continue to expand, and conflict ensues between the forces of production and the social conditions of production.

Marxism is an interpretation of history which explains the progress of society as a product of the expansion of the forces of production of the material means of life, that is, the development of economy.

Socialism is nothing more nor less than the social, political and ideological system which breaks the fetters upon economic growth created under capitalism and opens the way to a new period of economic and social expansion on a much larger scale.

This radical transformation of world power relationships reflects primarily in the case of both the USA and the USSR the growth of the productive forces.