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AGGREGATE EXPENDITURES LINE: A line representing the relation between aggregate expenditures and gross domestic product used in the Keynesian cross. The aggregate expenditure line is obtained by adding investment expenditures, government purchases, and net exports to the consumption line. As such, the slope of the aggregate expenditure line is largely based on the slope of the consumption line (which is the marginal propensity to consume), with adjustments coming from the marginal propensity to invest, the marginal propensity for government purchases, and the marginal propensity to import. The intersection of the aggregate expenditures line and the 45-degree line identifies the equilibrium level of output in the Keynesian cross.

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MARKET SHARE

The fraction of an industry's total sales or some other activity accounted for by one or more firms in the industry. An individual firm is often concerned with its "share of the market" as an indication of "success." Market share is also key to the analysis of market structure, market control, and industry concentration--especially for oligopoly. It can be used to indicated the degree concentration and market control of one or more firms in an industry. It can be used alone or to calculate concentration ratios and the Herfindahl index.

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Today, you are likely to spend a great deal of time waiting for visits from door-to-door solicitors seeking to buy either a how-to book on the art of negotiation or a flower arrangement for your aunt. Be on the lookout for empty parking spaces that appear to be near the entrance to a store.
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A communal society, a prime component of Karl Marx's communist philosophy, was advocated by the Greek philosophy Plato.
"Don't be afraid if things seem difficult in the beginning. That's only the initial impression. The important thing is not to retreat; you have to master yourself."

-- Olga Korbut, Gymnast

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