FWIW the unique economic position of America is pretty much solely due to the fact it prints the world reserve currency (which is because it was geographically

FWIW the unique economic position of America is pretty much solely due to the fact it prints the world reserve currency (which is because it was geographically isolated from WW1/2) and not much to do with its actual production. When that fails it becomes just another (very big) country that will have to produce as much as it consumes.