> "nation" (which is kind of a modern and made-up concept).

It isn't. Learn your history.

I have, I recommend "Imagined Communities," by Benedict Anderson.

I said history, not pseudo-intellectual pontificating theories of politics.

"Benedict Richard O'Gorman Anderson (August 26, 1936 – December 13, 2015) was an Anglo-Irish political scientist and historian who lived and taught in the United States." ~ (guess the source)

With respect, between the work of a Cornell professor and an internet rando, I'm going to defer to the professor on the topic the professor wrote on.

I said defer to history, not me.

The treaty of Westphalia would have a word about "modern".