Question

One of the main reasons John D. Rockefeller was able to succeed in the oil industry was because he

Answer 1

When examining how Rockefeller became successful, notice that he owned absolutely everything regarding the production and transportation. This means that the answer is C) Combined vertical and horizontal integration. He became a monopoly owner meaning he owned everything regarding the production of oil and didn't rely on anyone.

Answer 2

One of the main reasons John D. Rockefeller was able to succeed in the oil industry was because he C) combined vertical and horizontal integration.