Because the white southerners have the hardest time accepting about living side-by-side with ex-slaves during reconstruction, they introduced the black codes.
<h3>What was the black codes?</h3>
During the post-slavery era, the black codes refers to those laws that denies the most legal rights to newly freed slaves which was mostly passed by southern states following the Civil War.
The black codes, as originated in the slave codes defined the slaves as property and were set of laws enacted in the former Confederate states that restricted the freedom of former slaves and were designed to assure white supremacy.
Therefore, the Option A is correct.
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The answer is A, Serviceman's Readjustment Act
