Entrepreneur Bill Gates established Microsoft with Paul Allen, the world's biggest software business, and later became one of the world's richest men.Gates was born in Seattle, Washington, on October 28, 1955, to William Henry Gates III. Gates grew up with his older sister, Kristianne, and his younger sister, Libby, in an upper-middle-class family. When he encountered his future spouse, Mary Maxwell, their dad, William H. Gates Sr., was promising, if somewhat shy, a law student. She was an outgoing athletic student at Washington University.
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