Cattle became big business in the west because of the spread of

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 country was the philippines declaring independence from in this proclamation?

The supreme court settle conflicts between the various levels of government true or false ?