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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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HORIZONTAL MERGER

The consolidation of two or more separately-owned businesses, operating in the same industry and producing competing products, into a single firm. This is one of three types of mergers. The other two are vertical merger--two firms in different stages of the production of one good--and conglomerate merger--two firms in separate, unrelated industries.

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RED AGGRESSERINE
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Today, you are likely to spend a great deal of time wandering around the shopping mall trying to buy either a pair of gray heavy duty boot socks or a 50-foot blue garden hose. Be on the lookout for malfunctioning pocket calculators.
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Much of the $15 million used by the United States to finance the Louisiana Purchase from France was borrowed from European banks.
"Opportunities are usually disguised as hard work, so most people don't recognize them."

-- Ann Landers, columnist

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