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Decartelization
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==Historical background== {{expand list|date=August 2022}}<!-- Be careful not to add monopolies to this list. This article is not about monopolies, it's about cartels. --> Examples of alleged and legal cartels: *[[American Telephone & Telegraph]] (AT&T) controlled all telephone systems in the United States via a network of subsidiaries, the [[Bell System]], which was [[Bell System divestiture|broken up in 1982]]. *[[De Beers]] settled charges of price fixing in the diamond trade in the 2000s. (See [[De Beers antitrust litigation]].)
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