How did president Lincoln's plan for reconstruction treat southern states

Fairly

Explanation:

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President Lincoln believed that South had never legally sceceded from the Union, his plan for union was based on forgiveness.

For this purpose Lincoln gave his 10% Plan. According to this plan, a state in rebellion against the United States could be reintegrated into the Union when 10% of the 1860 vote count from that state would take and oath of allegiance to the United States and pledged to abide by the Emanicpation.