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11.
Previous studies have highlighted the differences between Africa and the Near East with regard to the earliest phases of food production. However, later innovations and changes, which constantly reshaped food production, have received much less attention. In an attempt to fill this lacuna, at least partially, this paper focuses on the emergence of specialized pastoralism. Through a diachronic overview of the appearance of the characteristics shared by most present-day specialized pastoral groups in Africa and the Near East, it is clear that only at a late date could this mode of livelihood have taken its present shape. This should serve as a warning that projections of recent pastoral lifestyles back in time should be made with caution. It appears that both Africa and the Near East went through two stages of development: a first stage with general food economies, and a second phase of specialization. Archaeo(zoo)logical evidence from the Sahel in Nigeria and Burkina Faso illustrates these developments on a more local scale.  相似文献   
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Abstract  

This paper primarily presents analyses from geophysical data and archaeological remains collected at one of a few known sites to the west of Lake Chad associated with fired-brick structures. It reports on previous fieldwork at the location, considers its alleged relationship with the early history of the Borno kingdom and then turns to present new data that provide fresh insights into the physical appearance, dating, material remains, economy and environment of the site. A brief discussion of the historical purpose of the fired-brick structures and the site itself concludes the paper.  相似文献   
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