How America’s source of immigrants has changed over time Posted on 2020/01/24 by Carl Robitaille How America’s source of immigrants has changed over time Animated #map shows the largest immigrant group (by country of birth) across the US over time. #History in a nutshell… Source: https://t.co/nfTtWFR9zA pic.twitter.com/CavYRrE60L— Simon Kuestenmacher (@simongerman600) October 14, 2018