... The remarkable success of the English, compared to other European nations, has been ascribed to their "daring and persistent energy;" a result which is illustrated by comparing the progress of the Canadians of English and French extraction...There is apparently much truth in the belief that the wonderful progress of the United States, as well as the character of the people, are the results [of Natural Selection.]”The Descent of Man, Charles Darwin, 1898
“In Northern Africa the two races have been mixing for thousands of years
...In North America, the Anglo-Saxon has, to a large extent, stood proudly aloof from the black...in Central and South America, the Portuguese and Spaniards have mixed very largely with the blacks and have displayed comparatively little of the usual antipathy. ... I have said nothing about the American Aboriginal type. In Latin America this type has been very largely assimilated by the 'white', while in Anglo-Saxon America it has become almost extinct.”Ethnic Factors in International Relations, Maurice Parmelee, 1914