Peter Drucker, born in 1909, contributed significantly to management thought, emphasizing creativity, innovation, and the importance of setting clear objectives through management by objectives (MBO). His work challenged bureaucratic management and introduced concepts such as organizational structures and federalism, focusing on decentralized control with a strong emphasis on the roles of management and employees. Drucker authored several influential books, including 'The Effective Executive' and 'Management: Tasks, Responsibilities, Practices,' shaping modern management practices and theories.