I think you have a point, but I don't tend to think to consider the current state of all nation states and their dominant cultures as static. 1000 years from n

I think you have a point, but I don't tend to think to consider the current state of all nation states and their dominant cultures as static. 1000 years from now, I imagine much will have changed. Which may or may not involve closed nations to address many of the same issues we in America face. I think we can see this in Europe now.