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How did Alexander Graham Bell's telephone revolutionize both communications and business in America? A) He used a complicated organizational structure in his new company that allowed both local and cross-country communication.B) He installed telephones in every office building in New York to facilitate communications between business and the stock exchange.C) He sold the rights to his invention to John D. Rockefeller, who put it into national use.D) He had an instant monopoly on the communications market when he combined telephone and telegraph services in AT&T.
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