Why did the vice president become more important with more responsibilites

Which is more important in determining the format in which recordings are offered by the music industry, new technology or consumer sovereignty? explain.

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.

Most criminologists agree that juvenile crime is less violent today than it was in the early 1990s. according to the text the reasons cited for this decline include what?