The Federal Trade Commission and almost every state are calling for Facebook to be broken up in what is probably the most groundbreaking tech antitrust lawsuit since Microsoft was sued in the 1990s. We take a look back at that Microsoft case to see if it offers any lessons for today’s tech giants. Molly Wood speaks with Margaret O’Mara, a history professor at the University of Washington and author of the book “The Code: Silicon Valley and the Remaking of America.”

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