Explain why it is usually more difficult to study and control efficiency in a social system than in a physical system?

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 actions did americans take to show their patriotism after pearl harbor?

Define the term universal male sufferage and give examples of when it affected the revolutions of 1848