14. which factor was the greatest advantage of the united states in world war ii? a. the military leaders of the united states b. the industrial capacity of the united states c. the geographical location of the united states d. the well-trained military in the united states

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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warfare was the primary means of cultural transmission in both regions.