Answer:
fear and cruelty.
Step-by-step explanation:
In the book titled THE PRINCE which was written by Niccolo Machiavelli, the author argues that leaders maintain power through FEAR and CRUELTY.
The book which was written 16th century serves as a guide or instructional material for new Princes or Royals in general.
The main idea of the book is that sometimes success and survival can rationalize the use of unethical standards to accomplish those goals.