The origin and development of currency.To live together as a group into the small. People in prehistoric times when approximately 6 - 7, exhibitions, exhibitions, the years make people know the exchange factors necessary for living. The produce of their excess demand for other needs, and lack the systematic exchange directly.When society grow. Living together is a large village makes a person needs more things in การครองชีพ. The exchange object to object directly, not because of the needs of both the two parties do not match once to exchange. People began to take a certain object is needed and the society. For objects or other products they need. Exchange system using the medium has occurred. The yield of their currency and precious objects, used as a medium of exchange. The object is to exchange with the requirements with one. This new system is more difficult, but it is more spacious than the original. The object is used as a medium of exchange in early stage. There are various, including livestock, weapons, tools, clothing. Jewelry, such as cows, goats, sheep, chicken, Tomahawk head bow fishing hook, hoe, shovel, leather animal wool fabrics. The premiums shell glass bead necklace earrings. The bracelet, seeds and salt, depending on the civilization, prosperity and popularity of each community in each period.
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