Palace revolution

A revolution (from the Latin revolutio, "a turn around") is a fundamental change in political power or organizational structures that takes place in a relatively short period of time when the population rises up in revolt against the current authorities. Aristotle described two types of political revolution:

Revolutions have occurred through human history and vary widely in terms of methods, duration, and motivating ideology. Their results include major changes in culture, economy, and socio-political institutions.

Scholarly debates about what does and does not constitute a revolution center on several issues. Early studies of revolutions primarily analyzed events in European history from a psychological perspective, but more modern examinations include global events and incorporate perspectives from several social sciences, including sociology and political science. Several generations of scholarly thought on revolutions have generated many competing theories and contributed much to the current understanding of this complex phenomenon.

The word "revolucion" is known in French from the 13th century, and "revolution" in English by the late fourteenth century, with regards to the revolving motion of celestial bodies. "Revolution" in the sense of representing abrupt change in a social order is attested by at least 1450. Political usage of the term had been well established by 1688 in the description of the replacement of James II with William III. This incident was termed the "Glorious Revolution".

There are many different typologies of revolutions in social science and literature. For example, classical scholar differentiated between political revolutions, sudden and violent revolutions that seek not only to establish a new political system but to transform an entire society, and slow but sweeping transformations of the entire society that take several generations to bring about (such as changes in religion). One of several different Marxist typologies divides revolutions into pre-capitalist, early bourgeois, bourgeois, bourgeois-democratic, early proletarian, and socialist revolutions.

...
Wikipedia