Sociology originated as a term in the late 18th century, derived from Latin and Greek roots meaning "the study of companions." Four main factors led to the development of sociology as an academic discipline: (1) the French Revolution disrupted traditional social hierarchies; (2) the Industrial Revolution led many to migrate to cities and exposed new social problems; (3) increased travel exposed Europeans to different cultures; and (4) the success of Newton in explaining natural phenomena inspired applying scientific principles to understanding social phenomena.