How did the Americans coming from the north add to the difficulties of the British army? A) by placing gunboats on all the rivers

B) by placing cannon on all the mountain tops

C) by burning bridges and chopping down trees to block paths

D) by refusing to sell them grain and cattle

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.

The middle east is the best association with which international traded product

Which colony leader urged virginia's to prepare for war