The Western Qin, also known as the Qin Dynasty, was a significant historical period in ancient China, lasting from 221 to 206 BCE. It is renowned for unifying various warring states and establishing the first centralized imperial government. The dynasty is credited with major reforms, including standardized weights, measures, and writing systems, which helped facilitate trade and communication across the vast territory. The founder of the Western Qin was Qin Shi Huang, who is famous for his ambitious projects, such as the early construction of the Great Wall of China and the creation of the Terracotta Army. Despite its short duration, the Western Qin laid the groundwork for future dynasties and significantly influenced Chinese culture and governance.