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HERFINDAHL-HIRSHMAN INDEX: A measure of concentration of the production in an industry that's calculated as the sum of the squares of market shares for each firm. This is an alternative method of summarizing the degree to which an industry is oligopolistic and the relative concentration of market power held by the largest firms in the industry. The Herfindahl index gives a better indication of the relative market control of the largest firms than can be found with the four-firm and eight-firm concentration ratios.

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ABILITY-TO-PAY PRINCIPLE

A taxation principle stating that taxes should be based on the ability to pay taxes. The ability-to-pay principle works from the proposition that those who have the greatest income should pay the most taxes. The ability-to-pay principle is the only reasonable way to finance the provision of public goods such as national defense, public health, and environmental quality. This is one of two taxation principles. The other is the benefit principle, which states taxes should be based on the benefits received.

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Today, you are likely to spend a great deal of time touring the new suburban shopping complex trying to buy either a coffee table shaped like the state of Florida or storage boxes for your summer clothes. Be on the lookout for letters from the Internal Revenue Service.
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Before 1933, the U.S. dime was legal as payment only in transactions of $10 or less.
"I feel sorry for the person who canžt get genuinely excited about his work. Not only will he never be satisfied, but he will never achieve anything worthwhile. "

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