When their period of service was ended , indentured servants

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.

How do i do this? true or false? : elephants have the same dna as humans and bananas alike.

Which is true about pontiacs war in 1763