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

Walter Cunningham
101
Henry Flager
100
Lamar Hunt
65
Harold Vanderbilt
85
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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