By the early twentieth century Bell’s telephone company, renamed American Telephone & Telegraph, was the largest corporation in America, with stock worth $1,000 a share. (When the company was finally broken up in the 1980s to satisfy antitrust regulators, it was worth more than the combined worth of General Electric, General Motors, Ford, IBM, Xerox, and Coca-Cola, and employed a million people.) Bell moved to Washington, D.C., became a U.S. citizen, and devoted himself to worthwhile pursuits.