Final answer:
The Emancipation Proclamation was issued for military reasons to weaken the Confederacy, bolster Union manpower, and deter European support.
Explanation:
The Emancipation Proclamation was issued as a military necessity for several reasons:
- Emancipating slaves could weaken the Confederacy's fighting ability.
- Emancipated slaves could be recruited to fight in the Union Army, bolstering manpower.
- Making the war about slavery would deter European powers from aiding the Confederacy.
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