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OLIGOPOLY, CONCENTRATION: Oligopoly is a market structure that contains a small number of relatively large firms, meaning oligopoly markets tend to be concentrated. A small number of large firms account for a majority of total output. Concentration unto itself is not necessarily bad, but it often leads to inefficient behavior, such as collusion and nonprice competition. Concentration is measured in three ways--market share, concentration ratio, Herfindahl index.

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RENTAL INCOME OF PERSONS

The official item in the National Income and Product Accounts maintained by the Bureau of Economics Analysis measuring rent earned by the household sector for supplying land and related factor services. This is one of five official factor payments making up national income. The other four are compensation of employees, net interest, corporate profits, and proprietors' income. Rental income of persons is typically the smallest of the five factor payment categories, usually less than 5 percent of national income.

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Today, you are likely to spend a great deal of time strolling through a department store wanting to buy either a remote controlled train set or a genuine down-filled snow parka. Be on the lookout for infected paper cuts.
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The first paper currency used in North America was pasteboard playing cards "temporarily" authorized as money by the colonial governor of French Canada, awaiting "real money" from France.
"It is not fair to ask of others what you are unwilling to do yourself. "

-- Eleanor Roosevelt, diplomat, activist

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