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CAPITAL ACCOUNT DEFICIT: An imbalance in a nation's balance of payments capital account in which payments made by the country for purchasing foreign assets exceed payments received by the country for selling domestic assets. In other words, investment by the domestic economy in foreign assets is less than foreign investment in domestic assets. This is generally not a desireable situation for a domestic economy. However, in the wacky world of international economics, a capital account deficit is often balanced by a current account surplus, which is generally considered a desireable situation. If, however, the current account does not balance out the capital account, then a capital account deficit contributes to a balance of payments deficit.

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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.

     See also | market share | concentration ratio | four-firm concentration ratio | eight-firm concentration ratio | Herfindahl index |


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COMMAND ECONOMY

An economy in which the government uses its coercive powers to answer the three questions of allocation. This is the real world version of the idealized theoretical pure command economy. While in this real world version some allocation decisions are undertaken by markets, the vast majority are made through central planning.

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Paper money used by the Commonwealth of Massachusetts prior to the U.S. Revolutionary War, which was issued against the dictates of Britain, was designed by patriot and silversmith, Paul Revere.
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