Answer:
In the chaos that reigned after the fall of the Han dynasty in 220 C.E., no one knew ... Kao-tsu also created a monetary system of copper coins and silk ribbons. ... Tai-tsung took the throne in 626 C.E. The Golden Age of China had begun. ... Civil exams based on merit were used once again and resulted in wise court officials.
Step-by-step explanation:
found in wecapeta