What does galarza mean by using the spainsh saying about the mule?

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.

Moral principles is what ? a. appreciation b. tariff c. fiscal d. ethics

The source of wealth for the city-states of the east african coast was trade between the interior of africa and the far east. true false