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TRADE SURPLUS: Formally termed a balance of trade surplus, a condition in which a nation's exports are greater than imports. In other words, a country is buying less stuff from foreigners than foreigners are buying from domestic producers. A trade surplus is usually thought to be a good thing for a country. However, every country in the world cannot run a trade surplus at the same time. Excessive trade surpluses can also lead to invasion by sizable foreign armies.

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MARGINAL PRODUCTIVITY THEORY

A theory used to analyze the profit-maximizing quantity of inputs (that is, the services of factor of productions) purchased by a firm in the production of output. Marginal-productivity theory indicates that the demand for a factor of production is based on the marginal product of the factor. In particular, a firm is generally willing to pay a higher price for an input that is more productive and contributes more to output. The demand for an input is thus best termed a derived demand.

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PINK FADFLY
[What's This?]

Today, you are likely to spend a great deal of time searching for rummage sales trying to buy either pink cotton balls or a genuine down-filled comforter. Be on the lookout for jovial bank tellers.
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This isn't me! What am I?

The penny is the only coin minted by the U.S. government in which the "face" on the head looks to the right. All others face left.
"The greatest use of life is to spend it for something that will outlast it."

-- William James, psychologist

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