I think the answer is on answers
I belive that the answer is B. <span> reversed the calming trend that had occurred after the repeal of the Townshend Acts.</span>
He created a trust that controlled 90% of the nation's oil refineries. If I remember correctly, horizontal integration is when you buy out the other businesses in the same market, while vertical integration is where you take control of everything related to your product, which is getting the oil, refining it, and distributing it, rather than selling those tasks out to third parties.
September !, 1939 is the correct answer, Hope this helps :)
