A monarchy is a form of government in which a group, generally a family representing a dynasty, embodies the country's national identity and its head, the monarch
A dictatorship is an authoritarian form of government, characterized by a single leader who makes all of the decisions an nobody can express their opinion.
Oligarchy is a form of power structure in which power rests with a small number of people. These people may be distinguished by nobility, wealth, family ties, education or corporate, religious or military control.
A system of government by the whole population or all the eligible members of a state, typically through elected representatives.
Theocracy is a form of government in which a deity is the source from which all authority derives. In which priests rule in the name of God or a god.