The visualization is part of a larger project called American Panorama at University of Richmond's Digital Scholarship Lab. It takes its cues from Charles Paullin’s 1932 tome Atlas of the Historical Geography of the United States, a sweeping collection of over 700 maps that charted everything from European settlement to the spread of railroads. Richmond's researchers are adding an interactive layer to their own digital atlas, allowing users to take a closer look at moments in this ongoing historical panorama. So far, the project includes maps like The Forced Immigration of Enslaved People, The Overland Trails, and Canals.You will almost certainly learn stuff you didn't know. How about this one? For most of San Diego's history, the largest single foreign-born group has been from Mexico. But, as the map below shows, that wasn't true in 1900:
More Germans than Mexicans? I didn't see that coming.