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IMPORT QUOTA: A limit on the importation of a particular good brought into one country from another country. An import quota, for example, would stipulate something like only X million pounds of swiss cheese can be imported into the United States from Switzerland each year. Such import quotas are a popular type of nontariff barrier imposed by countries throughout the world, competing with tariffs as the number one trade restriction. The general justification for import quotas is to protect domestic firms and industries from unfair competition by foreign companies. While this can be needed, import quotas are frequently used by oligopoly firms, with significant political influence to limit competition and maintain market control.

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SIGNALLING

When confronted by asymmetric information, the use of small bits of information, or indicators, that suggest more comprehensive information. Signalling is used by those with more information to reduce the cost of informing those with less information. It is commonly used in markets with adverse selection. Methods of signalling include advertising, brand names, and warranties. A related method is screening.

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Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club hoping to buy either arch supports for your shoes or an AC adapter that works with your MPG player. Be on the lookout for strangers with large satchels of used undergarments.
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The penny is the only coin minted by the U.S. government in which the "face" on the head looks to the right. All others face left.
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