NOTE: I will rename "Amazon" to "Amozan" to avoid confusion with the South American region. The world of Noah, the setting for my current fantasy story, has no extensive empires and very few if any large cities; pretty much everyone lives in primitive Copper/Early Bronze Age tribal societies that frequently war against each other. The world's human inhabitants can be sorted into three races: the white Japhethites of the temperate north, the tawny Shemites who roam the central deserts, and the black Kamites of the tropical south. The Japhethites and Shemites have patriarchal cultures whereas the Kamites are matriarchal in that women wield political and spiritual authority (though men still do most of the fighting and hunting). What I want to ask right now is whether I should add a few civilized cultures to the world. The reason is that one of my protagonists is a Japhethic pirate from Asgard, but I don't know if piracy would likely develop in a wholly primitive setting since there would be less inequality in wealth than in a setting with more advanced civilizations.