Democracy – power directed to people
Monarchy – ruled by kings, queens, etc. Either absolute or limited.
Aristocracy/Oligarchy – ruled by the few elite
Dictatorial/Authoritarian – power rests on a single person and people do not enjoy freedom.
Presidential – head of state and government is the president, the legislative and executive are independent, and the executive is directly accountable to people.
Parliamentary – head of government is the
prime minister, executive is not independent from the legislative, and the executive is directly accountable to the Parliament.