How did imperialism increase the battlefield of the war?

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.

What were the three outstanding events in 1619 that had a great influence on the colonies? representative government came to america. the first slaves were brought to america. the first governor was elected. the london company sent women to america. john rolfe developed a money crop-tobacco. next question ask for

List 3 impacts wwii had on canada.