Social sustainability is also about expanding opportunities for all people today and tomorrow. Together with economic and environmental sustainability, it is crucial for poverty reduction and shared prosperity.

Natural integration appears on the basis of the coincidence of interests, both individual and group. Forced integration is built on prohibitions to subordinate personal interests to externally set goals.

Social integration is the establishment of optimal links between previously unrelated social objects (individuals, groups, social classes) and their further cohesion into one system in which its parts are coordinated and interdependent on the basis of common goals and interests.