How was rockefeller able to build his monopoly across the oil industry?
a. he found newer and cheaper ways to refine oil, increasing his profits.
b he confined his business to ohio so he could buy all the refineries there.
c he bought up oil refineries, cut costs, and reinvested his profits in other refineries.
d he began to sell kerosene as well as oil, expanding his market.

How many citizens of mexico does it take to equal the ecological footprint of the average citizen of the united states? it takes nearly three mexican citizens to equal the ecological footprint of the average u. s. citizen. it takes about 12 mexican citizens to equal the ecological footprint of the average u. s. citizen. it takes just over eight mexican citizens to equal the ecological footprint of the average u. s. citizen. two citizens of mexico equal the ecological footprint of one average citizen of the united states. they are essentially equal?

Explain one example of how the u. s has struggles to balance energy independence and environmental

Did the spanish settlers and missions have a positive effect on world history? why, what did they do that was positive? why was the treaty of paris (1763) good for the world/world history? did the plymouth colony have a positive effect on world history? why, what did they do that was positive?