Abolition of monarchy

Abolition of monarchy has occurred throughout history, either through revolutions, coups d'état, wars, or legislative reforms (such as abdications). The founding of the Roman Republic is a noteworthy example. The twentieth century saw a major acceleration of this process, with many monarchies violently overthrown by revolution or war, or else abolished as part of the process of decolonisation. By contrast, the restoration of monarchies is rare in modern times, with only two major examples, Spain and Cambodia.