Political legitimacy

In political science, legitimacy is a concept concerning the right of an authority, usually a governing law or a regime, to rule the actions of a society. In political systems where this is not the case, unpopular regimes survive because they are considered legitimate by a small, influential elite. In Chinese political philosophy, since the historical period of the Zhou dynasty, the political legitimacy of a ruler and government was derived from the Mandate of Heaven, and unjust rulers who lost said mandate therefore lost the right to rule the people.