City Layout:  Grid Pattern

    Like the Aztecs, the Incas sometimes used a grid pattern to lay out their inner cities.  Although it was not common in either societies, it was used occasionally.  In the grid pattern, the streets were designed to cross one another at 90 degree angles.  Some anthropologists believe that use of the grid method was an earlier model of city arrangement because it is found in close proximity to Cuzco.  In the Inca city of Cuzco, the central sector was refurbished using a grid patten(Malpass 63).  Comparatively, the inner part ot the Aztec city of Tenochtitlan was also reconstructed using a grid pattern.
     I wonder why so many cultures used the grid pattern to arrange their cities.  Was it the simplicity of it that led these cultures to choosing this arrangement or could there have been leakage from traveling groups who carried information with them from other cultures?  I suppose it was most likely pure chance that these cultures who knew nothing of the others' existance created the same arrangement types independently.

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