Ancient China was first unified in 221 BC under Qin Shi Huang. The geography was defined by the Yellow and Yangtze Rivers where most people settled, as well as the Gobi and Taklamakan Deserts and Himalayan Mountains. The economy was based on trading goods like silk, salt, and iron along the Silk Road. Society was stratified between wealthy nobles who lived in palaces and poor farmers who lived in huts. Women had few rights and were subject to practices like foot binding. Ancient Chinese practiced religions like Buddhism, Confucianism, and Taoism and believed in the concepts of yin and yang. China was ruled by dynasties led by different families until a new