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ENTRY BARRIERS: Institutional, government, technological, or economic restrictions 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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INDUCED NET EXPORTS

Net exports by the foreign sector that depend on income or production (especially national income and gross domestic product). That is, changes in income induce changes in net exports. Induced net exports reflect the induced relation between imports and income, which means net exports decline as income increases. They are measured by the negative of the marginal propensity to import (MPM) and are reflected by the negative slope of net exports line. The alternative to induced net exports is autonomous net exports, which do not depend on income.

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BLUE PLACIDOLA
[What's This?]

Today, you are likely to spend a great deal of time browsing through a long list of dot com websites hoping to buy either a 200-foot blue garden hose or a video camera with stop action features. Be on the lookout for spoiled cheese hiding under your bed hatching conspiracies against humanity.
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Much of the $15 million used by the United States to finance the Louisiana Purchase from France was borrowed from European banks.
"How we spend our days is, of course, how we spend our lives. "

-- Annie Dillard, essayist

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Average Propensity to Consume
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