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Historians are divided over the economic fortunes of English towns in the late middle ages. Many argue for a ‘general crisis’ while others emphasize the variety of urban experience. Great Yarmouth is a striking example of a town facing protracted difficulties. Its decline in relation to other English towns between the fourteenth and sixteenth centuries is particularly marked. Fourth among provincial towns in the 1334 tax return, Yarmouth ranked eighteenth in 1377 and twentieth in the subsidies of the 1520s.Yarmouth's problems become apparent soon after 1350, but while the Black Death may have killed one-third of its inhabitants, it is not the main cause of the town's misfortunes. Yarmouth depended heavily on two industries: shipping and fishing. The former was undermined by the early stages of the Hundred Years War, and the latter by competition from the Low Countries. A silting harbour which drove away trade and the high cost of building and repairing the town walls added to Yarmouth's difficulties.Whether economic decline is measured in terms of totals, for example total volume of trade, or in terms of individual production or wealth, Yarmouth fared badly. In the second half of the fourteenth century, Yarmouth's trade was much reduced and the town's leading burgesses seem much poorer than their counterparts before 1350. While Yarmouth clearly was in decline from about 1350 onwards, the town's experiences cannot be used to prove the case for a ‘general crisis’. They have to be seen in the context of the continuing prosperity of Norwich and the revival of Ipswich.  相似文献   
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Forest frontiers are important areas for sustainable development as they combine the need to halt deforestation with the challenges of rural poverty. In the region of San Martín, Peru, the ‘Production, Protection and Inclusion’ model combines narratives of conservation, economic development and social inclusion in what can be defined as a ‘sustainable development frontier’. This article asks how such sustainable development frontiers change social, economic and ecological outcomes in the localities where they are found. The authors examine the reality of sustainable cocoa production linked to conservation and development goals, as promoted by government bodies, international agencies, cooperatives and chocolate brands in Peru, and show how, paradoxically, sustainability goals intensify production and attract smallholders into forest frontier areas. In doing so, the boom in demand for sustainable commodities has inadvertently created conditions encouraging further colonization of forested areas leading to a continuing rise in deforestation, ecological degradation and economic instability. Narratives of sustainable development can thus reinforce commodity intensification, as they obscure alternative approaches and reproduce traditional frontier dynamics.  相似文献   
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