The city-states of ancient Mesopotamia were independent cities constructed around temples and entirely self-contained within mighty perimeter walls.<span> City-states were unified with each other only by their shared use of the Sumerian language. They spent most of their time engaged in conflict over resources.</span>
True. This is why cliffs change or older buildings are scuffed up. Not because of vandalism or animals it’s because small particles slowly erode away the surface.
