Explain the significance of the supreme court's ruling in the case engel v. vitale

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 role did imperialism play in world war 2

What was the significant advancement of the caravel? a. it could sail with the wind c. it could sail against the wind b. it could sail at night d. it was motorized