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.