The strategic management discipline originated in the 1950s and 1960s. Among the numerous early contributors, the most influential were Peter Drucker, Philip Selznick, Alfred Chandler, Igor Ansoff, and Bruce Henderson.[2] The discipline draws from earlier thinking and texts on 'strategy' dating back thousands of years. Prior to 1960, the term "strategy" was primarily used regarding war and politics, not business.[18] Many companies built strategic planning functions to develop and execute the formulation and implementation processes during the 1960s