The document summarizes ancient Chinese history from 1750 BCE to 170 CE. It describes the geography of ancient China and the origins of Chinese civilization along the Yellow and Yangtze Rivers. The earliest dynasties, the Xia and Shang dynasties, ruled in this region. The Shang Dynasty established the first capital at Anyang and ruled through a system of aristocratic families until being overthrown by the Zhou Dynasty in 1122 BCE. The Zhou Dynasty introduced the concept of the Mandate of Heaven to justify changes in ruling dynasty and established feudalism. It was eventually weakened by warring states and internal conflict. The Qin Dynasty then unified China under a centralized legalist government and established many institutions that lasted