Under Reconstruction plan, the South was divided into five military districts.
a. Lincoln's
b. the Congressional
C. the Alternative
d. the Presidential

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation:

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b. a system of government that provided a model for the united states.