Corroborating sources allows a historian to increase the reliability of the information at hand. Having multiple sources in agreement makes it less likely for discrepancy
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Answer:
While most African Americans serving at the beginning of WWII were assigned to non-combat units and relegated to service duties, such as supply, maintenance, and transportation, their work behind front lines was equally vital to the war effort. Many drove for the famous “Red Ball Express,” which carried a half million tons of supplies to the advancing First and Third Armies through France. By 1945, however, troop losses virtually forced the military to begin placing more African American troops.
Explanation:
