The Cornelius Vanderbilt is known for creating a railroad transportation empire Option(b) is correct.
Who was Cornelius Vanderbilt?
Cornelius Vanderbilt was known to be as the self made millionaire who actually began buying railroads actually first acquiring the New York and Harlem Railroad in 1863.
His acquisition of various railroads consolidated the railroad industry in generally in the eastern and the entire Midwestern States.
Therefore Option(b) is correct.
Learn more about Cornelius Vanderbilt here:
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