What is a good sentence for states' right

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 is the main problem with the commission form of government? a commissioners often focus on one area. b. each commissioner has too much administrative power. c. the commissioners have trouble working together. d. commissioners are often very corrupt.

What was an important consequence of the neolithic revolution? ):