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Climate, Culture, and Catastrophe in the Ancient World (1440 words) |
 | This was the beginning of the Younger Dryas, (10500 BC) a millenium in which the circulation system of the North Atlantic went into a kind of planetary fibrillation, the African monsoons migrated southward, drying the desert. |
| BP (6000-3500 BC) at which time the temperature is warming culminating in an era warmer than present, when equatorial weather patterns may have reached farther north than at present, and the westerly storms of the north would have been confined to latitudes higher than at present. |
| By 4500 BC the favorable climatic conditions and stabilized lower alluvial plains favoring territorial control and mound building (4500 BC) among native Amercan groups in the lower valleys. |
| Mace Page 1 (1797 words) |
| Stone age maces were made as early as 8000 BC in some areas of the Near East but continued to be made much later. |
| The earliest of the historic era maces are the disc maces of pre-Dynastic Egypt, Naqada I period circa 3900-3600 BC. |
| Piriform (oval or pear shaped) mace heads appear in Egypt circa 3600 BC and were widely used through the Naqada II and III period, to roughly 3000 BC. |
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