How did John D rockerfeller vertically integrate his monopoly in 1882

Rockefeller vertically integrate his monopoly in 1882? He created a trust that controlled oil wells, refineries, and distribution networks. He created a trust that controlled ninety percent of the nation's oil refineries. ... He wanted to make sure he could always get fuel for his steel plant.

Explanation:

yes

explanation:

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.