Answer:
Dictatorship
Step-by-step explanation:
It is harder to retain Dictatorship as compared to Absolute Monarchy because dictatorship is the illegally take over the government by head of the military with ending the democracy while Absolute Monarchy is comes from hereditary monarchies and it is legal. A dictator control the country through military forces which is sometimes unacceptable for the nation and they start revolt against the dictatorship so it is harder to retain Dictatorship.