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BARTER EXCHANGE: A method of trading goods, commodities, or services, directly for one another without the use of money. In a barter exchange one good is traded directly for another. This sort of exchange ultimately requires a double coincidence of wants, meaning that each trader has what the other trader wants and wants what the other has. Without a double coincidence of wants the exchange process can become exceedingly complex, requiring a great deal of resources to complete transactions, resources that can not be used for production. In fact, inefficient barter trading was the primary reason that money was invented. With money, more resources can be used for production and fewer are needed for trading. See market.
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AGGREGATE DEMAND SHIFTS Changes in the aggregate demand determinants cause the aggregate demand curve to shift. The mechanism is comparable to that for market demand determinants and market demand. There are two alternatives--an increase in aggregate demand and a decrease in aggregate demand. An increase in spending by any of the four sectors--household, business, government, and foreign--shifts the aggregate demand curve to right. A decrease in spending by these four sectors shifts the aggregate demand curve to left.
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RED AGGRESSERINE
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Today, you are likely to spend a great deal of time driving to a factory outlet trying to buy either rechargeable batteries or a rechargeable battery for your computer. Be on the lookout for neighborhood pets, especially belligerent parrots.
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A thousand years before metal coins were developed, clay tablet "checks" were used as money by the Babylonians.
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"To sit back and let fate play its hand out, and never influence it, is not the way man was meant to operate." -- John Glenn, astronaut, U.S. senator
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HSB
High School and Beyond
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