<<France is an ethnically complex country.>>
Name a country that isn't ethnically complex. And please don't say America. Whatever ethnic mix my Euro ancestors brought to the US got passed on to me. So realistically Europeans are no older than Americans, Canadians, Australians, etc. You Euros just think you are more diverse than everyone else.
<<It is the largest country in Europe.>>
I think the key words there are IN EUROPE. To most people outside of Europe (and it may come as a shock to you but there are more people OUTSIDE of Europe than INSIDE), European countries are the size of postage stamps. So it gives us a chance to giggle when Euros call/brag about their countries being big. Well sure France is big . . . if you're comparing it to Rhode Island.
It has been settled or invaded by all the great cultures of Europe