This document provides an overview of the evolution of management theory from 1890-2000. It discusses several important historical events and developments that influenced management theory, including Adam Smith's publication of The Wealth of Nations and the Industrial Revolution. The document then summarizes several major management theories that developed over this period, including Scientific Management Theory, Administrative Management Theory, Behavioral Management Theory, Management Science Theory, and Organizational Environmental Theory. It provides details on the key theorists and concepts associated with each theory.