As I recall, it was the Little Boy and the Fat Man that effectively put an end to Japanese pride.
The actual crucial element about nationalism is the body thus ethno-nationalism it is.
The Puerto Rican either likes himself and wants to preserve himself and his potential or he wants it to be washed away and be appeased by some feel good ideas and consumerism.
Puerto Rican is a mixed-race identity to begin with and it seems to be combining the two ideas quite well, so what are they preserving? Their own biological/ethnical mixture and the feel-good philosophy?
Ideas and books mean nothing when the quality of people who were able to read and understand them have disappeared. Either the biology is preserved or it’s all gone in the long run, whatever it is.
Unfortunately, biology is not enough. I have noticed that many purebreds are unable to catch up and adapt to the changing word, and so fall behind the times. These are the traditionalists who want to live like they’ve always have but are stuck behind advancing times, and so are quickly used and gobbled up. I would also like to point out that many empires, like Persian and Ottoman Empire, were essentially of mixed race, from servants/soldiers, even to royalty itself.
en.wikipedia.org/wiki/Dev%C5%9Firme
Why did Christians (Europeans), overseen and united by the Vatican, lose their battles against the Ottomans? Because of greed, betrayal and bickering among themselves. They could not efficiently unite against a common enemy because everyone was too busy thinking about himself - just as it is now. So what has changed?
Intrinsically, nothing has changed. Everyone is still thinking about their own self-interests. Now, consider that it was centuries back that Europeans had a problem uniting together. There was no globalist anti-white propaganda back then that one could blame it on - only people themselves. en.wikipedia.org/wiki/Ottoman_wars_in_Europe