The following monarchs either lost their thrones through deposition by a coup d'état, by a referendum which abolished their throne, or chose to abdicate during the 20th century or 21st century. A list of surviving former monarchs appears at the end of the article.
See also: Abolished monarchy, List of current monarchs
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(Zanzibar was later united with Tanganyika, and Tanzania was formed)
See also List of living former sovereign monarchs
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