This document provides an overview of early human history from prehistory to 600 CE. It summarizes that early humans spread from Africa and began practicing agriculture between 9000-7000 BCE. By 1000 BCE, agriculture and cities had developed in most parts of the world. It then shifts to the major civilizations between 1000 BCE to 600 CE, including developments in China, India, and the Mediterranean region. Key events included the expansion of trade, formalization of governments and social hierarchies, and the rise and spread of major religions like Hinduism, Buddhism, Confucianism, and Christianity. Major interactions also connected different regions through trade routes and the expansion of Alexander the Great. Finally, it notes the decline of classical societies due to