Respuesta :
Here, the immediate effect of the Emancipation Proclamation led to the strengthening of the moral cause of the Union.
What is the Emancipation Proclamation?
This was a Proclamation issued by Abraham Lincoln to announce the freedom of slaves in the ten Confederate states that was still in rebellion.
That is, the proclamation made the abolition of slavery and Confederate territory became one of the norths war goals.
Therefore, the Option D is correct.
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