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Bartering has several problems, most notably that it requires a "coincidence of wants". For example, if a wheat farmer needs what a fruit farmer produces, a direct swap is impossible as seasonal fruit would spoil before the grain harvest. A solution is to trade fruit for wheat indirectly through a third, "intermediate", commodity: the fruit is exchanged for the intermediate commodity when the fruit ripens. If this intermediate commodity doesn't perish and is reliably in demand throughout the year (e.g. copper, gold, or wine) then it can be exchanged for wheat after the harvest. The function of the intermediate commodity as a store-of-value can be standardized into a widespread commodity money, reducing the coincidence of wants problem. By overcoming the limitations of simple barter, a commodity money makes the market in all other commodities more liquid. Many cultures around the world eventually developed the use of commodity money. Ancient China, Africa, and India used cowry shells. Trade in Japan's feudal system was based on the koku – a unit of rice. The shekel was an ancient unit of weight and currency. The first usage of the term came from Mesopotamia circa 3000 BC and referred to a specific weight of barley, which related other values in a metric such as silver, bronze, copper etc. A barley/shekel was originally both a unit of currency and a unit of weight.[66] Wherever trade is common, barter systems usually lead quite rapidly to several key goods being imbued with monetary properties[citation needed]. In the early British colony of New South Wales, rum emerged quite soon after settlement as the most monetary of goods. When a nation is without a currency it commonly adopts a foreign currency. In prisons where conventional money is prohibited, it is quite common for cigarettes to take on a monetary quality. Contrary to popular belief, precious metals have rarely been used outside of large societies. Gold, in particular, is sufficiently scarce that it has only been used as a currency for a few relatively brief periods in history. |
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