How did the Edict of Milan, which was issued in 313 CE, affect the spread of Christianity?

How did conservatism affect the nationalist movements in europe?

The solvent union and u.s believed in two different economic systems which was?

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.