How the origins of America’s immigrants have changed since 1850 – Pew Research Center
Germany includes East and West Germany (1980-1990), German states coded by IPUMS (1850-1940). Alsace and Lorraine are part of Germany for 1870-1910 …Read More
The Heartbeat of World events
Germany includes East and West Germany (1980-1990), German states coded by IPUMS (1850-1940). Alsace and Lorraine are part of Germany for 1870-1910 …Read More