How was the stamp act different from the sugar act

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.

What do u think caused the size of the roman empire to change

What was it an effect of you decline and trade after the fall of the roman empire