Based on both letters, how hopeless do you think the situation at yorktown must have been to force cornwallis to surrender ?need pls

Who is john brown and what did he do

Which product would have been most likely to have been traded in this area at this time?

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.