Final answer:
Cornelius Vanderbilt, Andrew Carnegie, Jay Gould, and John D. Rockefeller were industrialists and entrepreneurs.
Step-by-step explanation:
The men Cornelius Vanderbilt, Andrew Carnegie, Jay Gould, and John D. Rockefeller all have in common that they were industrialists and entrepreneurs. They were influential figures in the late 19th century who built successful businesses and amassed great wealth. Vanderbilt was known for his consolidation of railroad lines, Carnegie for his steel empire, Gould for his railroad investments, and Rockefeller for his dominance in the oil industry.