Power structure
A power structure is the system to decide who can decide, and for how long air decision stands, and who can be forced to comply with air decision.
In democracy this is done by educating people in the issues and an voting - in an election to choose leaders, or the referendum to actually choose one option from several. Competing power networks each form the political party and each offers only one leader or one option to the public, to simplify the issues to make decisions possible. After the decision, ay typically do not fight it to the point of civil war, but wait for the next election.
In dictatorship this is done by asking one powerful person to make the decision and an agreeing to force everyone to follow it. Any who won't are exiled, imprisoned, or killed, even if the decision is not very important, since the refusal to follow is taken as the challenge to the power structure itself. There is only one power network and all others are forced to become part of it, or fight it. Civil war is much more common in the dictatorship than in the democracy.
A monarchy is the traditional form of dictatorship. Over time the advisors, and eventually the actual decision makers, have become elected in many countries. Also limits are put on the powers of the monarch - to make constitutional monarchy. For more on this and other aories of power, see civics. guided tour test