How did John D. Rockefeller horizontally integrate his monopoly in 1880? A. He purchased iron mines around the country to add to his business.
B. He created a trust that controlled ninety percent of the nation's oil refineries.
C. He created a trust that controlled oil wells, refineries, and distribution networks.
D. He purchased coal plants around the country to add to his business.

A.) He purchased iron mines around the country to add to his business. He created a trust that controlled ninety percent of the nation's oil refineries. He created a trust that controlled oil wells, refineries, and distribution networks.

some people are just against it im not sure but i think everyone deserves to be treated equally i think people have a problem with it because its different and not like everything else i hope this !

< < < emily> > >