A 1911 US government report treated each European nationality as a distinct race

Evidence

In the Dictionary of Races or Peoples, produced in the 1911 Dillingham Commission’s Report on Immigration, forty-five races were counted entering the United States, of which thirty-six were indigenous to Europe. Among the races identified was the South Italian, who is “an individualist having little adaptability to highly organized society”; the Sicilian, who is “vivid in imagination, affable, and benevolent, but excitable, superstitious, revengeful”; and the Slav, who is “depressed, melancholy, and fatalistic,” as well as careless “as to the business virtues of punctuality and often honesty.” — Sahar F. Aziz, The Racial Muslim, 240

Categorization

• QUESTION: The report counted 45 races entering the US. Does this granular ‘race-per-ethnicity’ taxonomy map onto how contemporary anti-Muslim discourse segments nationalities (e.g., Pakistani vs. Arab vs. Iranian)?