This document discusses social change and its key aspects. It defines social change as a change in social structure or social relations. It notes that social change can originate internally from within a society or externally from outside forces. The document outlines several characteristics of social change, including that it is universal, continuous, inevitable, and varies in degree. It also discusses types of social change like alternative, redemptive, reformative, and revolutionary. Main factors that can cause social change are also summarized, such as demographic, cultural, technological, environmental, and psychological factors. The document stresses that social change is necessary in a rapidly changing world to address growing problems and inequality.