Select the correct answer.
which accurately describes a chart developed 20 years after a historical event?
a.
effective secondary source document
b. too biased for historical evidence
c. too focused for historical evidence
d. unreliable narrative source
e. useful primary source document
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the graph shows the spread of railways in the 1800s.

based on the graph, the conclusion that can be drawn about germany is answer d)   by 1880, germany had more rail lines than great britain and russia.

the united states began searching for a way to reduce oil

-agarvated

it made them more prductive and efficent but with the change of polcies less and les got into the navy