Answer:
Due to great power.
Step-by-step explanation:
Dictators were successful because they are the leader of country's army which helps them to maintains their power over the country and its people. The dictator spread fear and terror in the people so that the people can't revolt against the dictator. A dictator rises due to its popularity in the country or the democratic government did not fulfill their duties efficiently. The Hitler rise to power in the same way i. e. gaining popularity due to its ideology.