In this representation the area of widest cultural influences is coterminous with the area of commerce, because commerce in its widest extension is invariably carried on under some restraints of custom and customary law. Otherwise it is not commerce at all, but something predacious outside the law. But if the area of the economic process is almost invariably coterminous with the widest areas of cultural influence, it does not extend to the smaller social groups. As a rule trade does not invade the family. Family interests are always personal even when they are carried on under the forms of commerce. Primitive society, within the limits of the village, is usually communistic. All values are personal, and the relations of individuals to one another, economic or otherwise, are preordained by custom and law. The impersonal values, values for exchange, seem to be in any given society or social group in inverse relation to the personal values. The attempt to describe in this large way the historical, cultural, political, and economic processes, is justified in so far as it enables us to recognize that the aspects of social life, which are the subject-matter of the special social sciences, i.e., history, political science, and economics, are involved in specific forms of change that can be viewed abstractly, formulated, compared, and related. The attempt to view them in their interrelations is at the same time an effort to distinguish and to see them as parts of one whole. [Illustration: FIG. 2 a = area of most extended cultural influences and of commerce; b = area of formal political control; c = area of purely personal relationships, communism.] In contrast with the types of social change referred to there are other changes which are unilateral and progressive; changes which are described popularly as "movements," mass movements. These are changes which eventuate in new social organizations and institutions. All more marked forms of social change are associated with certain social manifestations that we call social unrest. Social unrest issues, under ordinary conditions, as an incident of new social contacts, and is an indication of a more lively tempo in the process of communication and interaction. All social changes are preceded by a certain degree of social and individual disorganization. This will be followed ordinarily under normal conditions by a movement of reorganization. All progress implies a certain amount of disorganization. In studying social changes, therefore, that, if not progressive, are at least unilateral, we are interested in: (1) Disorganization: accelerated mobility, unrest, disease, and crime as manifestations and measures of social disorganization.