Sociology, Science of Society, Social Institutions and Social relationships and specifically the systematic study of the development, structure, interaction, and collective behavior of organized human groups. It emerged at the end of 19^th century through the work of various sociologists by using observational technique surveys and interviews, statistical analysis, controlled experiments and other methods to study subjects such as the family, ethnic relations, schooling, social status and class, bureaucracy, religious movements, deviance, the elderly and social change. In order to study various aspects of society, the study of sociology is done. It uses various methods of empirical investigation and critical analysis to develop a body of knowledge about social orders and social change.