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ENTRY BARRIER: An institutional, government, technological, or economic restriction on the entry of firms into a market or industry. The four primary barriers to entry are: resource ownership, patents and copyrights, government restrictions, and start-up costs. Barriers to entry are a key reason for market control and the inefficiency that this generates. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.
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ASSUMPTIONS, PRODUCTION POSSIBILITIES The four key assumptions underlying production possibilities analysis are: (1) resources are used to produce one or both of only two goods, (2) the quantities of the resources do not change, (3) technology and production techniques do not change, and (4) resources are used in a technically efficient way.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time strolling through a department store trying to buy either a cell phone case or a pair of designer sunglasses. Be on the lookout for poorly written technical manuals.
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North Carolina supplied all the domestic gold coined for currency by the U.S. Mint in Philadelphia until 1828.
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"As the births of living creatures at first are ill-shapen, so are all innovations, which are the births of time. " -- Sir Francis Bacon, philosopher
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IS-LM
Investment/Saving-Liquidity/Money
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