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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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ELASTICITY The relative response of one variable to changes in another variable. Elasticity is commonly used in the study of market exchanges to identify the relative response of quantity (demanded and supplied) to changes in price. The phrase "relative response" is best interpreted as the percentage change, such as, the percentage change in quantity measured against the percentage change in price. The most common notions of elasticity are the price elasticity of demand and the price elasticity of supply. Other notable economic elasticities are the income elasticity of demand and the cross elasticity of demand.
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BLUE PLACIDOLA
[What's This?]
Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway looking to buy either a remote controlled sports car with an air spoiler or semi-gloss photo paper that works with your neighbor's printer. Be on the lookout for cardboard boxes.
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Much of the $15 million used by the United States to finance the Louisiana Purchase from France was borrowed from European banks.
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"Democracy is based on the conviction that man has the moral and intellectual capacity . . . to govern himself with reason and justice. " -- Harry Truman, 33rd U.S. president
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S&P 500
Standard&Poor's Stock Index
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