It has been, probably, one of the most common causes of local battles and other similar hard line activities too..Quichey wrote:Emigration is one of the oldest and most constant human experiences. Imaginary lines on maps and socially irresponsible hard line stances will not stop it.
Territoriality is hard-wired into animals of most if not all species.
You are right, lines on maps are artificial, and only change has been constant as this process continues.
The issue of whether new comers will bring good or harm with them has always been with us, and there is, and has been, no certain answer.