Two Centuries of U.S. Immigration

The above chart shows where U.S. immigrants came from over the past 200 years, measured as a percentage of the U.S. population at the time. Max Galka crunched the numbers and made an interactive map showing the places U.S. immigrants have come from between 1820 and 2013. Each dot represents 10,000 people. The 79 million people who immigrated to the U.S. during that period only include those who became permanent legal residents. (via Boing Boing)