What type of money did this economy use?

Commodity money relies on intrinsically valuable commodities that act as a medium of exchange. Fiat money, on the other hand, gets its value from a government order ... And commercial bank money can be described as claims against financial institutions that can be used to purchase goods or services.

Explanation:

The four most relevant types of money are commodity money, fiat money, fiduciary money, and commercial bank money.