Sumerian cities were surrounded by what geographic features? how did this impact their interaction with other people?

At the beginning of wwii, what action by winston churchill influenced hitler’s strategy?

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.

During the cold war, the united states was involved in certain regional conflicts due to fears later called the domino theory, which stated which concept?