What principles justified the presence of authoritarian rulers in European countries and in China?
Manipulation of information where the authoritarian regimes use data as a means of control. They develop a performance of good appearance and concealing any state resistance, thus excluding reliance on violent means, thus facing less resistance.
An economy where democratization results from the increased economic development.
Interactions with other elites and the masses where more important authoritarian rule establish in one area and there is no chance to protest from elites and the groups. The dictatorial regime oppresses the minority.
Violence - mostly, dictators use violence because of their lust for power and control over important resources.
Abuse of the constitution in authoritarian regimes where the governments had total power to coordinate all government activities. Here the public can not exercise democracy.