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This article reviews recent archaeological research on warfare in prestate societies of native North America. This survey comprises six regions: Arctic/Subarctic, Northwest Coast, California, Southwest/Great Basin, Great Plains, and Eastern Woodlands. Two lines of evidence, defensive settlement behavior and injuries in human skeletal remains, figure prominently in archaeological reconstructions of violence and warfare in these regions. Burning of sites and settlements also has been important for identifying the consequences of war and investigating more subtle aspects of strategy and directionality. Weaponry and iconography have to date provided important but more limited insights. Although considerable disparities exist between regions in the archaeological evidence for intra- and intergroup violence, all regions show a marked increase after A.D. 1000. These findings suggest that larger forces may have been responsible for escalating violence throughout North America at this time.  相似文献   
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This paper examines changes in the location of ore-based steel-makingcapacity in the U.S. over the period 1974 to 1991 using data on each of the 45 ore-based mills that were in operation in 1974. We find that the geographic ddistributions of demand and of competition from minimills and imports were important in determining where capacity reductions occurred and which plants were closed. Technology in use at the plant also affected capacity adjustment. However, we find that regional variation in prices of raw materials were notimportant factors in determining where steel-making capacity was reduced.  相似文献   
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Passage of the Ryan White Comprehensive AIDS Resources Emergency (CARE) Act of 1990 followed a form familiar to students of policymaking in the American intergovernmental system: the provision of significant federal financing for policy initiatives located primarily at the state and local levels. The successes and failures of the Act, including its 1996 reauthorization, suggest both the strengths and the limitations of that design. This paper examines the structure of the Act as a vehicle for the federal government to fund AIDS service delivery at the state and local levels and the intergovernmental consequences of allocation policies associated with the Act. It concludes that perennial problems of equity and access cannot be resolved by the delegation of responsibility for significant policy or funding decisions to localities; rather, questions about the role of the federal government in overcoming intralocal and interlocal disparities remain to be addressed.  相似文献   
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