What country did christopher columbus sail for

How did turkey change as a result of world war i?

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 former head of the cuban secret service was charged with protecting the country's prime minister for nearly 50 years?