作者：Puffert, DJ
摘要：Early North American railways chose different track gauges partly on the basis of differing engineering traditions and partly for mutual compatibility. The resulting dynamic process produced nine distinct common-gauge regions by the 1860s. Growing demand for interregional traffic and increasing cooperation among railways yielded incentives to resolve this diversity, and the specific regional pattern of gauges led to selection of 4'8.5 as the continental standard. The case offers support for a...
作者：University of Sheffield
作者：Montana State University System; Montana State University Bozeman
摘要：Understanding industrial decline is important from both historical and policy perspectives. The United States was the world's leading producer of gum naval stores in the early twentieth century, but by the late 1970s production had all but ceased. Evidence presented here indicates that changing relative prices induced forest owners,the key stakeholders, to shift production towards other forest products. Nevertheless, the federal government continued to provide transfers to this industry even a...
作者：University of North Carolina; University of North Carolina Chapel Hill
