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ENTRY BARRIERS: Institutional, government, technological, or economic restrictions 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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COMPLEMENT GOOD

In general, one of two (or more) goods that are related in a joint manner. In terms of demand, complement goods are those that provide satisfaction of a want or need when consumed together. In terms of supply, complement goods are those that are simultaneously produced using a given resource. A complement good is one of two ways that goods are related. The other is a substitute good.

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YELLOW CHIPPEROON
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Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway trying to buy either a country wreathe or galvanized steel storage shelves. Be on the lookout for defective microphones.
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It's estimated that the U.S. economy has about $20 million of counterfeit currency in circulation, less than 0.001 perecent of the total legal currency.
"Don't be distracted by criticism. Remember the only taste of success some people have is when they take a bite out of you."

-- Zig Ziglar

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