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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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VERTICAL EQUITY

A tax equity principle stating that people with a different ability to pay taxes should pay a different amount of taxes. This is one of two equity principles related to the ability-to-pay principle. The other is horizontal equity, which states that people with the same ability to pay taxes should pay the same amount of taxes.

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YELLOW CHIPPEROON
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Today, you are likely to spend a great deal of time looking for a downtown retail store hoping to buy either a three-hole paper punch or decorative picture frames. Be on the lookout for vindictive digital clocks with revenge on their minds.
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The first "Black Friday" on record, a friday marked by a major financial catastrophe, occurred on September 24, 1869 -- A FRIDAY -- when an attempted cornering of the gold market induced a financial crises and economy-wide depression.
"Don't judge each day by the harvest you reap but by the seeds that you plant. "

-- Robert Louis Stephenson, writer

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