Answer:
The Maya developed a currency for purchasing materials from other regions.
Explanation:
Mayan economic system was complex and rather different from the modern one. There was no one universal currency and form of trade and exchange. Mayans would actually develop various currencies when trading goods with different regions.
They would use certain products in the trade with certain regions, based on what other communities need and require, and what is unavailable for their region. Sometimes the goods would be symbolic and would reflect the relation between the communities.