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      Development and disintegration of Maya political systems in response to climate change.

      Science (New York, N.Y.)

      Agriculture, history, Belize, Caves, Civilization, Climate Change, Droughts, History, Ancient, Humans, Indians, Central American, Oxygen Isotopes, Political Systems, Rain, War

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          Abstract

          The role of climate change in the development and demise of Classic Maya civilization (300 to 1000 C.E.) remains controversial because of the absence of well-dated climate and archaeological sequences. We present a precisely dated subannual climate record for the past 2000 years from Yok Balum Cave, Belize. From comparison of this record with historical events compiled from well-dated stone monuments, we propose that anomalously high rainfall favored unprecedented population expansion and the proliferation of political centers between 440 and 660 C.E. This was followed by a drying trend between 660 and 1000 C.E. that triggered the balkanization of polities, increased warfare, and the asynchronous disintegration of polities, followed by population collapse in the context of an extended drought between 1020 and 1100 C.E.

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          Journal
          23139330
          10.1126/science.1226299

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