Simplify the following text for a Grade 9 native English-speaking person.
Original: Vendetta is typical of societies with a weak rule of law ( or where the state does n't consider itself responsible for mediating this kind of dispute ) where family and kinship ties are the main source of authority .
Simplified: Vendetta is typical of societies with a weak rule of law or in those where the state does not consider itself responsible for helping with this kind of dispute . In such societies , family and kinship ties are the main source of authority .