> The history of reserve currencies suggests a ~100 year arc of dominance

You’re extrapolating from a 200-year history with N=2.

Those are all western countries. Do you think Americans could be amenable to a European-based reserve currency? They share our values.

>Do you think Americans could be amenable to a European-based reserve currency?

Culturally, no. Americans would consider it an attack on their sovereignty.

It would be a tough sell in anything like the current political climate.