As cities changed and developed, consideration needed to be given to layout and design. They began to be built in an ordered fashion, in sectors divided using a common grid system. This formed the basis for the majority of the cities built across the Mediterranean, with the grids divided by fairly narrow thoroughfares. Mostly pedestrian traffic meant there was little need to create bigger routes. Only when the slope or curvature of the land changed, perhaps to accommodate a harbour, would a city plan waver from the established grid network.
