I’ve outside of this heard the South has in someways never really bounced back from the end of slavery. Could be a kind of cultural scar or lack of “infrastructure”. Like how Lincoln’s reconstruction plans never happened and his successor went a quite different direction.
At least anecdotally it feels that way.
I moved from one of the states that was totally clear in this map, to eastern Texas when I was younger and the social scars from the civil war still exist and by the way some people talk even to this day, you'ld think the war had ended last year. It was complete insanity to me.
https://www.thetrace.org/2023/06/background-check-buy-a-gun-...
Though as the sister comment mentions, low-density settings also seem to correlate, at least for the counties outside of the South.
https://www.reddit.com/media?url=https%3A%2F%2Fi.redd.it%2Fj...
It would be nice to see multiple maps, split up by category, with an additional one for gun-related deaths (combined suicide and assault).