From Angry Bear:

It’s always the same map.

Here from Brad Delong is the map of the percentage who were slave by county in 1861

slaves

 

here is the corresponding area of a map of intergenerational relative income mobility by county from R Chetty 2014

Chetty

 

Here is a map of male life expectancy at birth

lifeexp

It’s not past yet.

(You see this pattern a lot in maps of various social and economic indicators. Poverty :

http://www.censusscope.org/us/map_poverty.gif#sthash.a8ryyJvK.dpuf