Development of money


Main article: History of money
The first instances of money were objects with intrinsic value. This is called commodity money and includes any commonly-available commodity that has intrinsic value; historical examples include pigs, rare seashells, whale's teeth, and (often) cattle. In medieval Iraq, bread was used as an early form of money. In Mexico under Montezuma cocoa beans were money. [1]

Roman denarius
Currency was introduced as a standardised money to facilitate a wider exchange of goods and services. This first stage of currency, where metals were used to represent stored value, and symbols to represent commodities, formed the basis of trade in the Fertile Crescent for over 1500 years.
Numismatists have examples of coins from the earliest large-scale societies, although these were initially unmarked lumps of precious metal.[3]
Ancient Sparta minted coins from iron to discourage its citizens from engaging in foreign trade.
The system of commodity money in many instances evolved into a system of representative money. In this system, the material that constitutes the money itself had very little intrinsic value, but nonetheless such money achieves significant market value through scarcity or controlled supply.