Who was able to "stake a claim"

What might be something all americans believe in that unite us as a nation ?

How did german physicist werner heisenberg's uncertainty principle shake beliefs in newtonian physics?

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.