Not sure what you are saying here? That literally nothing has been done?
Plenty has been done. Plenty of fuckery.
When they freed the slaves they delayed telling them for 2 months to get another harvest out of them
Confederate generals and officers ended up talking alot of jobs in the governement
Sharecorpping and the brand new narritve that black people are lazy.
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Thats just after the civil war, like months. We we still got Jim Crow and the fun of Reconstruction.
No the nation has never properly advdressed slavery and it's lingering effects