ImmigrationInternetNature How America’s Source of Immigrants Has Changed in the States (1850 – 2013) September 28, 2015 Alex Via pewhispanic.org Related Posts:Official gems, minerals and rocks symbols of every…Historical Maps of the United States and North AmericaHow US Immigration Patterns Shaped America: Two…The Price of Sex around the World MappedThe world's top 10 most populous cities from 100 AD to todayNorth America in 1850The Oldest Building in Each U.S. State MappedWhich country has the most palm species?