Which laws enacted immediately after the civil war were designed to maintain the social structure of slavery?

The Black Codes were enacted immediately after the Civil War which were designed to maintain the social structure of slavery.

Explanation:

The slavery that was prominent in the southern state didn't end immediately after the American Civil War. In fact, the steps taken to abolish slavery in the southern states right after the Civil War gave a major setback to the regional economy.

To avoid further economic loss of the states, Black Codes were implemented to allow slavery to some extent.

would not cooperate with each other voluntarily.

i am sure the answer is d