How America's source of immigrants changed over a century
The originating countries from which immigrants came to the United States has changed dramatically over the last 100 years.
PEW Research portrays this difference in the article From Germany to Mexico: How America’s source of immigrants has changed over a century, by Jens Manuel Krogstad and Michael Keegan, October 7, 2015.
Here is a map comparing immigrant's originating countries in 1910 vs 2013:
This animated map shows changes from 1850 to 2013:
The article notes that:
Nearly 59 million immigrants have arrived in the United States since 1965, making the nation the top destination in the world for those moving from one country to another. Mexico, which shares a nearly 2,000-mile border with the U.S., is the source of the largest wave of immigration in history from a single country to the United States.
But today’s volume of immigrants is in some ways a return to America’s past. A century ago, the U.S. experienced another large wave of 18.2 million immigrants, hailing largely from Europe. Many Americans can trace their roots to that wave, from 1890 to 1919, when Germany dominated as the country sending the most immigrants to many of the U.S. states, although the United Kingdom, Canada and Italy were also strongly represented...
Since 1965, when Congress passed legislation to open the nation’s borders, immigrants have largely hailed from Latin America and Asia...