Which American entrepreneur and businessman developed the principles of modern bridge in 1925?

Walter Cunningham
Henry Flager
Lamar Hunt
Harold Vanderbilt
Harold Stirling Vanderbilt was an American railroad executive, a champion yachtsman, an innovator and champion player of contract bridge. He came from a famous family of entrepreneurs, and was also an avid sailor, winning the Regatta of the America Cup three times.
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Walter Cunningham
Henry Flager
Lamar Hunt
Harold Vanderbilt
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