Select all that apply. What were main points of the Progressive Era A. All of the Above
B. adopting direct democracy devices,
C. imposing income taxes on the wealthy
D. restricting big business

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 project establish leonardo da vincis reputation as a creative and talented engineer

Which word best describes early america foreign policy ?