Final answer:
Cornelius Vanderbilt consolidated railroad lines to create New York Central Railroad while Rockefeller grew his oil company through vertical integration.
Step-by-step explanation:
Events between Rockefeller and the Railroads/Vanderbilt:
Cornelius Vanderbilt was a railroad tycoon who consolidated several smaller railroad lines to create the powerful New York Central Railroad Company. He also purchased stock in rail lines connecting his company to Chicago. Meanwhile, John D. Rockefeller, an oil tycoon, recognized the advantages of controlling transportation and grew his company through vertical integration, acquiring businesses involved in all aspects of the oil refining industry. Rockefeller lowered kerosene prices significantly. These events illustrate the impact of Vanderbilt and Rockefeller on the railroad and oil industries respectively.