In pre-colonial Central America, the cocoa seed served as a medium of exchange. The use of cocoa seed for transactions was possible because it was:

It was accepted as a method of payment among the natives.

Explanation:

The main reason why an item is taken as currency is that all parties involved accepted as a medium of exchange.

Also it retain his value over time. As the seed is not alter as time pass

For saving reasonings it may be more harder as the seed eventually losses their properties but in these economies the savings weren't as much. People would plant most of the seed and use the remmanent for trade.

In pre-colonial Central America, the cocoa seed served as a medium of exchange. The use of cocoa seed for transactions was possible because it was used as trade by barter although the general acceptability makes it so during the era

Explanation:

During the pre-colonial era, the use of trade by barter was the only means of exchange and cocoa seed was part of what was used then because of its acceptability