Comparisons between international integration and integrative processes on lower social levels or in other social sectors have rather been neglected in the recent development of integration theory. However, they might have taught something more about the dynamics of integrative processes in general. International integration here, is compared with the creation and development of multi-purpose or all-purpose interest groups. Both are viewed as dynamic social processes of increasing interdependence and interaction, which start from the recognition that individual interests might better be served by turning them info group-interests, through a process of successive compromises. Such social processes are accompanied by the creation of proper structures and by a shift of loyalty to the group or community-level.