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The Complete Idiot's Guide to Economics, 2nd Edition by Tom Gorman

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Why the Big Get Bigger

Why are so many industries in the United States dominated by a handful of very large companies? For decades, the Big Three automakers—General Motors, Ford, and Chrysler—dominated the U.S. market. Now they share it with several other foreign car companies that are the large automakers in their nations: Toyota and Honda of Japan, Mercedes Benz and Volkswagen of Germany, Volvo of Sweden, and several others.
Three major companies—General Mills, Kellogg’s, and Post—dominate the cereal business. Proctor & Gamble and Colgate Palmolive dominate personal care products, such as soap and toothpaste. Independent booksellers have been supplanted by chains such as Barnes & Noble and Borders. Other chain operations, such as CVS, Kinko’s, ...

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