Negative contributions by Genghis Khan?

How did france social divisions on the late 1700s contribute to the french revolution

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.

N1947, the united nations create a country