Because they immigrated from lower classes, and aggregates reflect class sizes:

Because they immigrated from lower classes, and aggregates reflect class sizes: Arkansas:97.5, Arizona:97.4, Nevada:96.5, Alabama:95.7,New Mexico:95.7, Hawaii:95.6, California 95.5, Louisiana:95.3, Mississippi 94.2,

Black IQ = 78 huge underclass.
White IQ = 100 small underclass

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