In 1920, the West ruled huge amounts of the world.

People everywhere talk about Islam and the West. Presumably that has some relationship to reality, that these are entities that have some meaning and they do. Of course the core ofthat reality is differences in religion.

The United States has been an immigrant country. The Hispanics who come here are largely from Mexico and South America. They are Catholics, but that is an American religion. One-third of our population is Catholic so that does not have the same impact as Muslims coming into Europe.

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.

Nationalism is a central ideology for people who are trying to establish their own states in which they can play a dominant role.

People have multiple identities.

When you have increased migration of peoples and ethnic and religious minorities, you develop a set of rules and language the larger society can accept and the minority community can accept.