secondary sources are: books, newspapers, pamphlets and encyclopaedias. Secondary sources involve generalization, analysis, synthesis, interpretation, or evaluation of the original information so i would say D. a series of correspondence between former United States presidents Thomas Jefferson and John Adams
It would be :<span> The great loss of life in World War I was fresh on the mind of most Americans.
Hope this helps !
Photon</span>
Answer:
war
Explanation:
they needed guns and supplies for the soldiers
communication...: people could ask for a certain product
transportation...: get supplies easier for making stuff
mass...: they could make large quantities of stuff faster