Yes, by all modern measures the place is a Third World Country.
(Yes, I am also well aware that there are primarily White and Black areas that are nearly as impoverished, so please keep that argument out of here)
My question is if there is any post 1900 POD which would leave the area of OTL's Oglala Lakota, Jackson, & Bennett counties in South Dakota all somewhere above the median per capita income ($22,900 in 2009-2013 OTL dollars) for U. S. County equivalents. If you can plausibly get the place to DC Suburb levels that is obviously a bonus, but wrecking the rest of the country does not count.
(Yes, I am also well aware that there are primarily White and Black areas that are nearly as impoverished, so please keep that argument out of here)
My question is if there is any post 1900 POD which would leave the area of OTL's Oglala Lakota, Jackson, & Bennett counties in South Dakota all somewhere above the median per capita income ($22,900 in 2009-2013 OTL dollars) for U. S. County equivalents. If you can plausibly get the place to DC Suburb levels that is obviously a bonus, but wrecking the rest of the country does not count.