Quite obviously power will continue to play a central role in global politics as it always does. But usually there is something else.

Fascism and communism have not entirely disappeared but have been sidelined certainly, and liberal democracy has come to be accepted, in theory at least, around the world, if not always in practice.

In the 19th century it was basically nationality and people trying to define their nationalism and create states which would reflect their nationalism. In the 20th century, ideology came to the fore, largely, but not exclusively, as a result of the Russian Revolution and we have fascism, communism and liberal democracy competing with each other. Well that's pretty much over.

Collective will supplants individual whim

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.

People have multiple identities.

The core of the American set of beliefs has remained pretty constant.