Question

One of the effective methods of control employed during the rule of monarchies was the divine right of kings. this was a method of maintaining stratification that falls under the general category of ________.

Answer 1

I believe the answer is: controlling ideas

Controlling ideas refers to influencing the general perception that held by other people.  This action is most commonly done by monarchies in order to gain support from the citizens to do a certain action.
It also often used to subsequently send a message that government/nobles have higher status in that society that granted them more  rights to influence their society.