Said "I don't care whether slavery is voted up or down"

What pact signed on 1949 reinforce that the united states would not return to an isolationist policy

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.

Why was the united nations established