We study the influence of agricultural labor intensity on individualism across U.S. counties. To measure historical labor intensity in agriculture we combine data on crop-specific labor requirements and county-specific crop mix around 1900. To address endogeneity we exploit climate-induced...

This study examines the relationship between Trumpism and COVID-19 vaccination in the US. We find that counties with greater Trump support show lower COVID-19 vaccination rates. However, this relationship is beyond the effects of Republican partisanship. The distinctive effects of Trumpism are...

This paper examines the long-run impact of cotton agriculture on local development in the US South, focusing on a novel aspect of structural change. Exploiting climate-based variation in cotton production, I show that cotton specialization in the late 19th century had a negative impact on local...

This study explores the imprint of American slavery on industrial innovation. We hypothesize that historical slave concentration hindered innovation activity through post-Reconstruction policies, which created labor market conditions facilitating unskill biased technical change. County-level...

Korean Abstract:본 연구는 북한의 대중수출비중 증대가 북한 수출품의 질적 구성에 미친 영향을 실증적으로 분석하고자 한다. 지난 20여 년간 북한 수출구조 변화의 가장 큰 특징이라 할 수 있는 대중수출비중의 증대가 수반한...