Dave Donaldson whose job market paper was a very interesting paper titled “Railroads of the Raj: Estimating the Impact of Transportation Infrastructure” won 2017 John Clark Bates medal given “to that American economist under the age of forty who is judged to have made the most significant contribution to economic thought and knowledge.” The winner only has to be working in the US- citizenship is not a criteria.
The link to the citation is here: https://www.aeaweb.org/about-aea/honors-awards/bates-clark/david-donaldson
The abstract for the Railroads of the Raj NBER Working paper is as follows:
“How large are the benefits of transportation infrastructure projects, and what explains these benefits? To shed new light on these questions, this paper uses archival data from colonial India to investigate the impact of India’s vast railroad network. Guided by four predictions from a general equilibrium trade model, I find that railroads: (1) decreased trade costs and interregional price gaps; (2) increased interregional and international trade; (3) increased real income levels; and (4), that a sufficient statistic for the effect of railroads on welfare in the model (an effect that is purely due to newly exploited gains from trade) accounts for virtually all of the observed reduced-form impact of railroads on real income in the data. I find no spurious effects from over 40,000 km of lines that were approved but – for four different reasons – were never built.”