Which robber baron became one of the richest people in the world by investing in the shipping and railroad indistries?

Cornelius Vanderbilt became one of the richest people in the world by investing heavily in the shipping and railroad industries during the 19th century. Initially starting with a successful shipping business, he later shifted his focus to railroads, where he consolidated several lines and expanded their reach. His aggressive business strategies and innovations in transportation contributed significantly to his immense wealth and influence, earning him the title of a "robber baron."