As america grew stronger in the 20th century, it became more important to educate citizens about how government operates and international affairs. this ensured that people could a. pay taxes b. serve in the military c. obey leaders without question d. make educated decisions about choosing leaders select the best answer from the choices provided a b c d

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.