https://wol.jw.org/en/wol/d/r1/lp-e/1200001089?q=nimrod+black&p=doc
«It may here be noted, however, that Cush is very evidently a principal progenitor (perhaps along with Put) of the dark-complexioned branch of the human family (Jer 13:23), as is indicated by the areas of settlement of certain...