The wall had been the source of bloodshed and anger between the two nations for years.
It had split families apart on either side.
It had been witness to umpteen deaths, destruction and unprovoked firing resulting in a high number of casualties in different incidents.
The people on either side of the wall had different beliefs, virtues and principles so much so that the two nations were as different as chalk and cheese in their foreign policy matters, economy and global standing.
The Korean wall was successful in splitting the North and South at both a physical and people-to-people level.