The Han Dynasty was one of the most influential dynasties in Chinese history. First, the Han Dynasty was founded by the rebel leader Liu Bang in 202 BCE. Next, they established a centralized government and a civil service system, which allowed them to effectively govern their vast empire. Then the Han Dynasty developed a strong economy by introducing new technologies and encouraging trade with other countries. Finally, the Han Dynasty left a lasting legacy on Chinese culture by introducing Confucianism as the official state ideology and promoting the development of the Chinese written language.