 Chicago was the base of commercial operations for industrialists John Crerar, John Whitfield Bunn, Richard Teller Crane, Marshall Field, John Farwell, Julius Rosenwald, and many other commercial visionaries who laid the foundation for Midwestern and global industry.Meanwhile, John D. Rockefeller, creator of the Standard Oil Company, made his billions in Cleveland.At one point during the late 19th century, Cleveland was home to more than 50% of the world's millionaires, many living on the famous Millionaire's Row on Euclid Avenue.