>>211735006They enslaved blacks and castrated the men but couldn't stop themselves from raping the women, hence the racial mixing. A pure berber can be relatively white but you see some types that are very subsaharan.
Another factor is the ottoman empire, they deversed part of their troops there notably soldiers with prostitutes and rape. One of their insults is "kulugli", meaning son of a turk, sometimes janissary in the eastern mediterranean, but besides that the turks sent random central asians over to north africa. It's the only way to explain the outlandish faces some algerians have. Some of their great grandfathers must be uzbek, tajik, pakistani and so on.