Absolute monarchy is a form of monarchy in which the sovereign is the sole source of political power, unconstrained by constitutions, legislatures or other checks on their authority. Throughout history, there have been many absolute monarchs: some famous examples are Louis XIV of France and Frederick the Great of Prussia.
Absolute monarchies today include Brunei, Eswatini, Oman, Saudi Arabia, Vatican City, and the individual emirates composing the United Arab Emirates, which itself is a federation of such monarchies – a federal monarchy. Although absolute monarchies are sometimes supported by legal documents (such as the King's Law of Denmark–Norway), they are distinct from constitutional monarchies, in which the authority of the monarch is restricted (e.g. by legislature or unwritten customs) or balanced by that of other officials, such as a prime minister, as in the United Kingdom or the Nordic countries.