This document discusses management functions and some of the world's biggest achievements of management. It defines management as planning, organizing, leading, and controlling organizational resources to achieve goals. The four main management functions are described as planning, organizing, leading, and controlling. Some of the world's largest projects achieved through effective management are the Egyptian pyramids, the Great Wall of China, and the Sydney Opera House. These massive projects required managing huge workforces and resources over long periods of time to complete.