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81.
In September 1346, Edward III brought his victorious army to the gates of Calais to begin a siege that over 12 months developed into the largest military operation conducted by the English on French soil during the fourteenth century. It is also perhaps the least understood campaign of Edward III’s reign, because of the loss of the army pay records. We know from chronicles that the men of Calais conducted a heroic defence of their town, and we know too that the English created and maintained an enormous logistical operation first to besiege and then to capture the port. What is little understood, however, is the scale, scope and chronology of the siege. The role played by English naval forces has received little attention, yet there is a series of pay records relating to their service which can compensate for the loss of the vadia guerre accounts and which can enrich understanding of the campaign. Using this evidence, this article reappraises the whole expedition, highlights the numbers of ships and mariners involved in the siege, and draws attention to periods of intensive military activity. Edward III’s ultimate objective was to capture, hold and use the town as a safe port of disembarkation for future invasions.  相似文献   
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This paper contributes new information to the body of evidence for Middle Stone Age tool-use in Tanzania. Magubike rockshelter is located in an archaeologically unexplored region of the south-central part of the country, and thus fills a significant geographical gap between sites further to the north and those to the south in Zambia and Mozambique. Early analysis of a portion of the lithic materials demonstrates parallel changes in lithic reduction intensity, raw material preference and typology. This article explores possible explanations for this pattern, including the possibility that they reflect changes to local environment, and suggests avenues for future research.  相似文献   
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Despite increasing polarization in the House of Representatives, preferential trade agreements (PTAs) often pass not only with, but often because of, support from both parties. What explains these patterns? When do members cross party lines to support (or oppose) trade legislation? We argue that members are both ideologically and electorally motivated. Further, we argue that the relative balance of these incentives varies across the membership in meaningful ways. We examine House votes on 11 PTAs and find that ideology and district trade position have independent effects on support for free trade. We also find that the effect of trade position is conditioned by the ideology of the legislator; moderates are more responsive to their constituents' interests on trade.  相似文献   
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