排序方式: 共有87条查询结果,搜索用时 15 毫秒
41.
42.
43.
We propose the existence of extensive trade and interaction among the peoples of the American Southwest and Mesoamerica. We base this inference on our detection of the widespread presence of theobromine, the biomarker for cacao, in 50 of 75 vessels used by Ancestral Puebloans (previously referred to as Anasazi) elites and non-elites from the Four Corners area and Hohokam elites of the Gila and Salt river valleys in the prehistoric American Southwest. We used a non-invasive, non-destructive aqueous sampling procedure that provides conservation advantages over the current methods that require crushing and boiling sherds or removing residues from vessel surfaces. Analysis of these samples by sensitive LC-MS instrumentation capable of detecting nanogram quantities of material revealed theobromine in non-local vessel forms found in elite burials in great house and platform mound sites as well as in local vessel forms used by non-elites living in small unit-pueblos. After elimination of plants native to the Southwest as the source of theobromine, we conclude that either Theobroma cacao or Theobroma Bicolor was imported from its homeland in the Mesoamerican tropical coastal lowlands. Our results are at odds with the current consensus that there was little systematic commerce between Mesoamerican and Southwestern polities. We suggest that cacao was exchanged for high quality turquoise such as that mined in the Cerrillos, New Mexico mining district. We conclude that, far from being isolated developmentally, this trade integrally tied populations in the American Southwest to the socio-political and economic activities of Mesoamerican states. 相似文献
44.
45.
46.
47.
48.
49.
50.
Dorothy Norris-Tirrell 《政策研究杂志》2002,30(1):58-69
Upon their arrival in the United States, immigrants, whether documented or undocumented, impact the provision of local government services. Survey data collected from four immigrant groups (Nicaraguans, Haitians, Central Americans, and Mexicans) in Miami, Florida, and Las Vegas, Nevada examine the question of whether country of origin is a predictor of local government service utilization by immigrants. The findings suggest that immigrants, regardless of country of origin, share similar characteristics and attitudes regarding life in the United States. The major differences among the immigrant groups studied appear to be in their plans for the future. The Mexican respondents were likely to be described as sojourners, with plans to return to their home country, while the other groups intended to settle permanently in the United States. At the local level, these findings suggest that policymakers must be sensitive to motivations of the immigrants who locate in their areas, understanding the implications for service delivery in multilanguage, multiculture communities. 相似文献