The downfall of this nation will be at the hands of the urban areas. To great extent the Civil War was fought between urbanites and agriculturists. It is still going on.
While industialization and urbanization was making headway on a narrow coastal strip, the North as a whole was still a highly agricultural land in the 1860s. Southern farmer soldiers often found they had more in common with their Yankee farmer counterparts than with the non-working aristocracy who led the Confederacy into rebellion.
Over 80 percent of the U.S. population in 1860 lived in rural areas. I don't think the percentage varied that significantly between North and South. Likewise the overwhelming majority of our population, North and South, today is urban.
Indeed it is.