The Han Dynasty was a significant period in Chinese history, lasting from 206 BC to 220 AD. It is known for its cultural, political, and economic advancements, which laid the foundation for future dynasties. The dynasty is often divided into two periods: the Western Han and the Eastern Han, each contributing to the development of the Silk Road and the spread of Confucianism. During the Han Dynasty, innovations such as paper and the seismograph were developed, enhancing communication and scientific understanding. The dynasty also saw the expansion of the Chinese empire, establishing a legacy that influenced Chinese civilization for centuries to come.