Various buildings give both good and bad traits. Look at data\export_descr_character_traits.txt for the full list of triggers (data\text\export_buildings.txt has a list of what the sometimes-cryptic building names mean). As for the Carthaginians, keep in mind that Numidians are also considered Carthaginians (not that a race's extinction makes a difference to how your characters feel about them anyway).
-Simetrical
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