Sociologists study all things human, from the interactions between two people to the complex relationships between nations or multinational corporations. Sociologists believe that our social surroundings influence thought and action. Though sociology draws on the Western tradition of rational inquiry established by the ancient Greeks, it is specifically the offspring of 18th- and 19th-century philosophy and has been viewed, along with economics and political science, as a reaction against speculative philosophy and folklore. In the eighteenth and nineteenth centuries, Western Europe was rocked by technical, economic, and social changes that forever changed the social order. The book explains all about history of sociology in simple language.