Monarchism is the advocacy of a monarch or monarchical rule. A monarchist is an individual who supports this form of government, independent of any specific monarch; one who espouses a particular monarch is a royalist. Conversely, the opposition to monarchical rule is sometimes referred to as republicanism.
Depending on the country, a monarchist may advocate for the rule of the person who sits on the throne, a pretender, or someone who would otherwise occupy the throne but has been deposed.
Monarchical rule is among the oldest political institutions. Monarchy has often claimed legitimacy from a higher power (in early modern Europe the divine right of kings, and in China the Mandate of Heaven).
In England, royalty ceded power elsewhere in a gradual process. In 1215, a group of nobles forced King John to sign the Magna Carta, which guaranteed its barons certain liberties and established that the king's powers were not absolute. In 1687-88, the Glorious Revolution and the overthrow of King James II established the principles of constitutional monarchy, which would later be worked out by Locke and other thinkers. However, absolute monarchy, justified by Hobbes in Leviathan (1651), remained a prominent principle elsewhere. In the 18th century, Voltaire and others encouraged "enlightened absolutism", which was embraced by the Holy Roman Emperor Joseph II and by Catherine II of Russia.