До літописних творів належить?​

Ineed on 2-4 i want y’all to reply to this question so i can turn this into my teacher tomorrow

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