What contributed to the shortage of medicine and hospital supplies during the civil war? a. refugees were fleeing texas with suppliesb. factories were making paper insteadc. supplies were needed on the battlefieldsd. supplies were not being reused.

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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some american cities felt workers were being oppressed by business monopolies