When and Why Did People Start Living in Cities
{"Image DocumentName": "When and Why Did People Start Living in Cities?", "Image ImageDescription": "The Hearths of Urbanization. The innovation of the city is called the first urban revolution, and it occurred independently in six separate hearths, a case of independent invention. The six urban hearths are tied closely to agriculture. \u00a9 2012 John Wiley & Sons, Inc. All rights reserved.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}