What does cahan means by the phrase"a polyglot vistor to ellis island"?

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.

Why was the development of an alphabet an important advancement for the phonician civilization? check all that apply

The roosevelt corollary specifically states that the united states would play what role in latin america? a. mediator c. police power b. watchdog d. buffer state