What new practices did strong monarchs. introduce in england

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.

Which would make the best heading for this list of notes about the migration of african-americans during the reconstruction era?

What was the great awakening? a. a religious movement b. a social movement against slavery c. a political rebellion d. a scientific movement