P.903 - §5 About twelve thousand years ago the era of the independent cities was dawning. And these primitive trading and manufacturing cities were always surrounded by zones of agriculture and cattle raising. While it is true that industry was promoted by the elevation of the standards of living, you should have no misconception regarding the refinements of early urban life. The early races were not overly neat and clean, and the average primitive community rose from one to two feet every twenty-five years as the result of the mere accumulation of dirt and trash. Certain of these olden cities also rose above the surrounding ground very quickly because their unbaked mud huts were short-lived, and it was the custom to build new dwellings directly on top of the ruins of the old.
