Help please will mark brainliest I think I know the answer just wanted to see other opinions because they did get a lot more money during the 1920s but that doesn't really mean that they all could buy stuff yk?

How was rockefeller able to build his monopoly across the oil industry? he found newer and cheaper ways to refine oil, increasing his profits. he confined his business to ohio so he could buy all the refineries there. he bought up oil refineries, cut costs, and reinvested his profits in other refineries. he began to sell kerosene as well as oil, expanding his market.

In the latter stages of the civil war who was given the responsibility of winning the war for the north

How does the phrase starcrossd lover and death marks lover introduce the theme of love and fate in the prologue to romeo and juliet