Why and how did shihuangdi standardize laws money and the writing system?

Shihuangdi, the first emperor of China, standardized laws, money, and the writing system to unify the diverse states of China under a centralized authority, promoting stability and efficiency. By implementing a uniform legal code, a standardized currency, and a common script, he aimed to facilitate trade, communication, and governance across different regions. These reforms helped to strengthen his control, reduce local disparities, and foster a sense of shared identity among the Chinese people. Such standardization was crucial for consolidating his power and ensuring the longevity of the Qin dynasty.