200 years of immigration to the U.S. in one graphic

The National Geographic has compressed close to two hundred years into a graphic that mimics the rings in a tree.

The creators say:

These immigration “rings” expand during years when certain welcoming factors are prevalent, such as when American immigration policies become less restrictive and its economy offers greater opportunity. The “rings” tend to stay slim during years of war or economic upheaval.

The origins of U.S. immigrant populations also transform from era to era. In the 1840s and 1880s, European immigrants came mainly from northern and western Europe, whereas the famous influx of the early 1900s, symbolized by Ellis Island’s gateway, emanated mostly from southern and eastern Europe. Immigration from Asia rose between 1970 and 2000, while large-scale immigration from Latin America began in 1950 and lasted for half a century. Immigration from Africa only becomes visible in the 21st century, though early U.S. Census data omits populations of slaves and indigenous communities.

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