Which business did cornelius vanderbilt control by the late 1800s

Railroad industry

Explanation:

Cornelius Vanderbilt is known to be one of the American tycoons in the 19th century. Vanderbilt first started investing in the steamship business before investing in railroads. It began in the 1850s when he started getting interested in the railroads. He became rich by controlling the country's transportation business.  

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