Immigrants who arrived in the U.S. before the Civil War were less likely to reside in locations with high immigrant concentrations as their time in the U.S. increased. This is contrary to the experience of recent immigrants who show no decrease in concentration after arrival. The reduced...

We present evidence showing that the course of economic growth and of health, as measured by stature, Body Mass Index (BMI), mortality rates, or the prevalence of chronic conditions, diverged in the nineteenth century and converged in the twentieth. To analyze the change in welfare resulting...