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M: The standard abbreviation for imports produced by the domestic economy and purchased by the foreign sector, especially when used in the study of macroeconomics. This abbreviation is most often seen in the aggregate expenditure equation, AE = C + I + G + (X - M), where C, I, G, and (X - M) represent expenditures by the four macroeconomic sectors, household, business, government, and foreign. The United States, for example, buys a lot of the stuff produced within the boundaries of other countries, including bananas, coffee, cars, chocolate, computers, and, well, a lot of other products. Imports, together with exports, are the essence of foreign trade--goods and services that are traded among the citizens of different nations. Imports and exports are frequently combined into a single term, net exports (exports minus imports).
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PERFECT COMPETITION, LONG-RUN ADJUSTMENT A perfectly competitive industry undertakes a two-part adjustment to equilibrium in the long run. One is the adjustment of each perfectly competitive firm to the appropriate factory size that maximizes long-run profit. The other is the entry of firms into the industry or exit of firms out of the industry, to eliminate economic profit or economic loss. The end result of this long-run adjustment is a multi-faceted equilibrium condition that price is equal to marginal cost and average cost (both short run and long run).
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YELLOW CHIPPEROON
[What's This?]
Today, you are likely to spend a great deal of time searching for rummage sales hoping to buy either a New York Yankees baseball cap or several magazines on home repairs. Be on the lookout for florescent light bulbs that hum folk songs from the sixties.
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A thousand years before metal coins were developed, clay tablet "checks" were used as money by the Babylonians.
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"I know the price of success; dedication, hard work and an unremitting devotion to the things you want to see happen. " -- Frank Lloyd Wright, architect
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QJE
Quarterly Journal of Economics
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