
The author describes eleven rival regional "nations" in the United States (Yankeedom, New Netherland, the Midlands, Tidewater, Greater Appalachia, the Deep South, New France, El Norte, the Left Coast, the Far West, and First Nation), and how these deep roots continue to influence our politics today.
[1] https://www.amazon.com/American-Nations-History-Regional-Cul...
If you read news and opinion articles from the early 1900’s you’ll find that many authors are saying the same thing as people say today. In context of American Nations, the answer is “we’ve always been like that.”
American Nations is a more recent book that describes more of the United States, though with less depth.
[1] https://en.wikipedia.org/wiki/American_Nations
[2] https://en.wikipedia.org/wiki/The_Nine_Nations_of_North_Amer...
[3] Geographical Psychology, Peter J. Rentfrow. Current Opinion in Psychology. https://www.sciencedirect.com/science/article/pii/S2352250X1...
Spoiler alert - many areas of the US have political leanings shaped by the people that originally settled there (and by settled I mean mostly Europeans ousting the original people that were there).