What changes did Henry II make to the English legal system and how did these changes affect feudalism?

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.

Which group of native arkansas used northwestern arkansas as its traditional hunting grounds? osage mississippian woodland quapaw 35 points plz

Why is ivan iv known as “ivan the terrible”?