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.

id say bottom left to top top left to bottom right and middle to middle

explanation:

“the battle of stalingrad is not a turning point necessarily in strategic terms, because a lot more has to be done before the soviets can be certain of defeating germany,” says renowned world war ii historian richard overy. the germans had fought nearly a thousand miles across the soviet union to get to stalingrad.