Because there was no central authority in mycenae, warrior-kings were able to set up their own governments and become dictators. set up a class system with enslaved persons at the bottom. attack and raid nearby settlements. force everyone to learn to write.

Because there was no central authority in mycenae, warrior kings were able to :
 C. Attack and raid nearby settlements
Central authority is usually the one that protected those settlements and put regulation on it. Since there's no central authority, they basically able to do whatever they please with it