JAMB - Economics (2011 - No. 20)
During the era of barter, money was generally in the form of
notes
precious metals
coins
commodities
Giải thích
Commodity money is a physical good that consumers universally use to trade for other goods.. It was use as money during the barter system. They include commodities such as gold, silver, copper, salt, peppercorns, tea, decorated belts, shells, alcohol etc.