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AGGREGATE EXPENDITURE DETERMINANT: A ceteris paribus factor that affects aggregate expenditures, but which is assumed constant when the aggregate expenditure line is constructed. Changes in any of the aggregate expenditures determinants cause the aggregate expenditure line to shift. While a wide variety of specific ceteris paribus factors can cause the aggregate expenditure line to shift, it's usually most convenient to group them into the four, broad expenditure categories -- consumption, investment, government purchases, and net exports. The reason is that changes in these expenditures are the direct cause of shifts in the aggregate expenditure line. If any determinant affects aggregate expenditures it MUST affect one of these four expenditures.

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OLIGOPOLY CHARACTERISTICS: The three most important characteristics of oligopoly are: (1) an industry dominated by a small number of large firms, (2) firms sell either identical or differentiated products, and (3) the industry has significant barriers to entry.

     See also | oligopoly | oligopolistic behavior | industry | product differentiation | barrier to entry | concentration ratio | merger | nonprice competition | collusion | cartel | monopoly | monopolistic competition | antitrust laws |


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OLIGOPOLY CHARACTERISTICS, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2026. [Accessed: April 18, 2026].


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SURPLUS

A condition in the market in which the quantity demanded is less than the quantity supplied at the existing price. Because sellers are unable to sell as much of the good as they want, a surplus generally causes a decrease in the market price, which then acts to restore equilibrium. A surplus, which also goes by the terms excess supply and buyers' market, is one of two basic states of disequilibrium for the market. The other is shortage.

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Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club wanting to buy either super soft, super cuddly, stuffed animals or a large stuffed brown and white teddy bear. Be on the lookout for pencil sharpeners with an attitude.
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There were no banks in colonial America before the U.S. Revolutionary War. Anyone seeking a loan did so from another individual.
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