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MARGINAL PROPENSITY TO INVEST: The proportion of each additional dollar of national income that is used for investment expenditures. Or alternatively, this is the change in investment expenditures due to a change in national income. Abbreviated MPI, the marginal propensity to invest is the slope of the investment line used in the analysis of Keynesian economics. As such, it also plays a role in the slope of the aggregate expenditure line and the multiplier effect.

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CAPITALISM

A type of economy, or economic system, based on--(1) private ownership of most resources, goods, and other assets; (2) freedom to generally use the privately-owned resources, goods, and other assets to get the most wages, rent, interest, and profit possible; and (3) a system of relatively competitive markets.

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Today, you are likely to spend a great deal of time wandering around the downtown area trying to buy either a pair of red goulashes with shiny buckles or a handcrafted bird feeder. Be on the lookout for a thesaurus filled with typos.
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The 1909 Lincoln penny was the first U.S. coin with the likeness of a U.S. President.
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Chicago Mercantile Exchange
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