Walls delineating boundaries between nations or barriers for defense have stood since the dawn of human history. Wall Street in Manhattan, for example, received its name because Dutch settlers erected a walled defense against the Native American tribes they had wronged with unprovoked genocidal type raids.
If one wants to visit Christopher Columbus’s house in Genoa Italy, not far from it is the old city walls of Genoa, which is now surrounded by modern buildings. Everyone has heard of the Great Wall of China, the walls of Jericho and Troy, and the Berlin Wall. All of these barriers were created for either defense, to keep people out, or to keep people in. What does history tell us about these walls?
It tells us that while walls may be necessary to preserve boundaries and prevent invasion, they are not foolproof and eventually doomed, thanks to human ingenuity, to failure.