Who was the last person to die who was in the soviet union

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.

Then write 1-2 paragraphs describing one individual you believe has made a significant contribution to florida and united states history. in your response, explain why this individual's contribution was significant.

Who was in charge of american troops during world war i?