Just a quick book recommendation. “American Nations: A History of the Eleven Rival Regional Cultures of North America” is a 2011 book by journalist and author Colin Woodard.
The book begins with the Euro invasion of North America and continues to the present day, with a dash of futurism in the epilogue. While I don’t agree with 100% of the book’s conclusions, it does offer an apt paradigm through which to view national politics.
Here is a map of the 11 (cultural) nations discussed in the book–click on map to make larger.