WILL GIVE BRAINLIEST Money in coins or notes, which is different from checks, money orders, or credit.

 Money orders are generally easier to buy, but cashier's checks are more secure. ... A cashier's check should not be confused with a certified check, which is also a bank-issued check—the main difference is that the bank signs a cashiered check while the customer signs certified checks

Explanation: hope that helps

answer; i believe that they became wealthy from gold and salt in their area, and became powerful by controlling trade in west