Why was the Song dynasty’s shift to paper currency an improvement over coin currency?

A.
Paper currency was cheaper to manufacture.

B.
Paper currency was harder to counterfeit.

C.
Paper currency was more durable.

D.
Paper currency was easier for traveling traders to use.

3 answers

A, B, and D are all reasons why the Song dynasty's shift to paper currency was an improvement over coin currency. However, C is not accurate as paper currency is not more durable than coin currency. Coins can last for centuries, while paper currency is subject to wear and tear and can easily be destroyed or damaged.
so what is it a b or d
The correct answer is a, b, and d.