Answer:
B. creating China's first monetary system
Step-by-step explanation:
The Qin dynasty is one of the most respected dynasties, and it had some very marking and influential achievements. One of those achievements was the creation of the first Chinese monetary system. The Qin wanted to improve the economy, the trade, to make it more efficient, and also to be more simple and easy. This led to the Qin's creation of the monetary system. Instead of having multiple different regional coins, differing in value, the Qin made unified, single type of coins, having the same value, and applied it all across the empire.