What was john spargo asking americans to do after they read his book?

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.

Andreus vesalius is known for being the first scientist to provide detailed and accurate

Which of the follow modern activities would only have been possible after the neolithic revolution