The largest cities of the Indus Valley Civilization, such as Harappa and Mohenjo-Daro, were ultimately abandoned due to this prolonged drought (Weiss, 1996). This is the first confirmed instance of a climate-related civilization collapse, which Professor Wiener of Harvard University calls "The ...
Archeologists have since determined that the Western Settlement failed around A.D. 1400 and that the Eastern Settlement was abandoned a few decades later. The onset of the Little Ice Age in the 14th century was almost certainly a contributing factor, as it clogged the route in and out of Gre...