The document provides an overview of human origins and early civilization. It describes how earliest humans originated in Africa around 2.5 million years ago. Key findings include footprints in Tanzania and the skeleton of "Lucy" in Ethiopia. During the Paleolithic and Neolithic Ages, tool making and use of fire helped hominids become more skilled, intelligent and adaptable. The development of agriculture around 8000 BC led to population growth and settled villages. Larger agricultural villages evolved into cities with specialized workers, irrigation, trade and social classes.