Sociology is the study of society, with a focus on the study of the social interactions of people, groups, and entire societies. This academic discipline emerged in the early 1800s and evolved through that century as struggles for global leadership emerged. Scientific methods were used to understand how and why groups come together and continue across time. From this inquiry, theories about social rules and governing structures give insight on why individuals are motivated to be a part of groups. In an applied form, sociological research benefits educators, lawmakers, administrators, families, and others who seek resolution of social problems and creation of public policy.