Social science is the branch of science devoted to the study of societies and the relationships among individuals within those societies. The term was formerly used to refer to the field of sociology, the original "science of society", established in the 19th century. In addition to sociology, it now encompasses a wide array of academic disciplines, including anthropology, archaeology, economics, human geography, linguistics, mathematics, management science, media studies, political science, psychology, and history. (For a more detailed list of sub-disciplines within the social sciences see: Outline of social science.)