How did the Atlantic Slave Trade impact American colonization and American society in general?

Which president created the cabinet? when?

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 is the name for the main idea behind the settling of western lands by americans in the early-1800s?