What made Standard Oil a horizontal integration monopoly?
a. It controlled all aspects of oil production.
b. It owned ninety percent of US oil refineries.
c. It formed a trust.
d. It operated all across the United States.
What made Standard Oil a horizontal integration monopoly?
a. It controlled all aspects of oil production.
b. It owned ninety percent of US oil refineries.
c. It formed a trust.
d. It operated all across the United States.