200 Years American Immigration

200 Years of American Immigration (Via Keith Ewing’s FB post)



Northeastern University’s Pedro CruzJohn WihbeyAvni Ghael, and Felipe Shibuya have created a striking visualization

In science, the technique of studying climatic and ecological change over time via tree rings is known as dendrochronology.


One thought on “200 Years American Immigration

Leave a Reply

Your email address will not be published. Required fields are marked *