I examine how market access affects the output of agricultural crops and whether changes to output were driven by increasing concentration in production, using the late nineteenth American transportation network expansion as a natural experiment. I use detailed potential yield data from GAEZ-FAO...

This paper examines whether increased market access driven by railroad network expansions had long-run effects on those living in affected areas during their early life. I make use of linked complete count U.S. Censuses to follow individuals who were children in 1900 and trace through short-run...