Immigrants during two global centuries : rising quantity and falling quality -- A framework -- Looking at local labor markets -- Immigration shocks and labor market absorption : two modern examples -- Immigrants, wages, and inequality : the global centuries compared -- Policy and the demise of...

Within-country ethnic diversity in high-wage immigrant nations is driven by long distance migration. This paper documents the migration-diversity connection for the first global century before 1914 and the second global century after 1950. It distinguishes between ethnic diversity among the...