Answer:
Because the aim of the Civil War was to end with slavery. African Americans should be allowed to engage in the fight for their freedom.
Step-by-step explanation:
Frederick Douglass was an American abolitionist. After escaping from slavery in Maryland, he became a national leader of the abolitionist movement throughout the United States.
He helped to convince President Lincoln that slaves should serve in the Union forces. The Union leaders and even Lincoln himself were not convinced since that to accept African American troops.
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