In the years leading up to the Second World War, isolationist sentiment coursed pretty strongly throughout the United States. Some Americans feared that immigrants were a threat to the country. Sound familiar? Then you’ll have no trouble understanding the reasons why the map below, titled America–A Nation of One People From Many Countries, was published in 1940 by the Council Against Intolerance in America.
“With the exception of the Indian, all Americans or their forefathers came here from other countries,” the illustrator Emma Bourne inscribed on the map. The Council Against Intolerance commissioned Bourne’s work in an effort to remind Americans that the U.S. had always defined itself as a country of varied national origins and religious backgrounds.
Lauren Young, "The Powerful 1940 Map That Depicts America as a Nation of Immigrants", Atlas Obscura, February 6, 2017 :It was produced by the Council Against Intolerance in the lead up to World War II.