So in your opinion these cultural elements have disappeared? Common law, Christian morality, nationalism are all alive and well in most of European countries.
Disappearance of phenomena isn't instantaneous and global. Whenever something starts to disappear, it disappears from certain regions or societal groups first.
Heavily Islamic suburbs in Europe have a rather different set of cultural elements and while still geographically located in Europe, their cultural affinity is not that of the host country anymore.
Heavily Islamic suburbs in Europe have a rather different set of cultural elements and while still geographically located in Europe, their cultural affinity is not that of the host country anymore.