Another, if I may?
WWll...Alsace Lorraine??? I heard one side was German, the other French.
Alsace Lorraine has changed hands between Germany and France several times. It has both German and French speaking peoples which kind of explains the reason for this. Since WW2 it has been included in France who also control Alsace Lorraine in the period between the great wars. Before WW1 it was part of Germany as it was during WW2.