Socio-economic structure is the economic system viewed from the aspect of its human organizational requirements to produce goods and services and the social consequences of this organization, particularly considered as the various classes, according to their ownership of the means of production and to the unequal distribution of income and wealth. Some socioeconomic structures are the clan or tribe (with patriarchal or matriarchal rulership); the feudal or aristocratic (with ownership of Slaves or serfs); the individualistic (mixed-market, free-market, bourgeois, capitalistic); and the collective or communal (cooperative, socialist, communist). Socioeconomic structure in the feudal and individualistic economies is determined by the power of production and ownership of wealth. In the tribal and communal economies power (hence position and structure) is conferred by the functions or offices of distribution of tasks, information and resources. The individualistic economies tend towards structures that are unlimitedly oligarchic and consequently and inevitably democratic. The communal or collective economies tend towards a monolithic, centralized, bureaucratic-apparatus structure of pyramidal proportions with a limited oligarchy inevitably autocratic.