The other issues aren't exactly unconcerning, but I think we have to acknowledge that this is a quite peaceful time. For most of history, what we call "unrest" was the status quo, and there were in addition wars of open territorial conquest which are nearly extinct today.
- Continued urbanization is essential to growth as we know it
- Non-urban voters are less attuned to what cities need to grow
Then regardless of political ideology, our disticts + FPTP method of growing makes non-negligible growth of the real economy very difficult.
History tends to get highly filtered and very little attention is paid to the incredibly bumpy road those times represent.
If you think we are, you’d have to agree that the EU is post-decline. The UK, France (the list goes on) are all countries that are past their peak of power, influence and prestige.
But I would argue those EU countries haven’t declined in a negative sense. They’ve just evolved into something other than a global superpower.
Europe has some issues too but they don't have the same systemic failures we have. Also, Europe can be independently successful or failing from the us.
France in comparison is building alliances in the Mediterranean, the Middle East and Africa. I believe they have a lot of growth in their future. They are far form done and very much realpolitik and with expansion in mind( plus one of the few countries that still holds colonies across the world).