I'll answer your question with a question. How long does it take for a culture to collapse? Rome? Mayan? Grecian?<quoted text>
Interesting observation, should you actually be able to prove it. How long before these cultures collapse?
Not to mention the many states here in the U.S.
If what you suggest is true, the world is going to have a lot co collapsing
Furthermore, if you check, some of those cultures are already going through major changes.
Further furthermore, I would suggest we are in a place where the world IS going through significant collapses of the old normal.