Maybe Iraq will come back and become the dominant power among Arab countries. That seems to me as conceivable.

When you mention the word ideology, everyone has communism in the back of their minds, which was an entirely well formulated ideology and statement of belief. You read the Communist Manifesto and you know what the core of it is.

I don't know what will happen 100 years from now.

The basis of association and antagonism among countries has changed over time.

I wouldn't rule out the possibility of Muslim or at least Arab countries developing some form of organization comparable to the European Union. I don't think that's very likely, but it conceivably could happen.

Also, of course, for most of this time most Americans thought of America as a white country with, at best, only a very segregated and subordinate role for blacks.

The biggest difference as far as Muslims in Europe and America are concerned is that the number of Muslims in America is small compared to the number in Europe.