Usurper
The usurper is a derogatory term used to describe the power to take the throne (throne / throne) in an unlawful or controversial manner under the monarchy; or a person who succeeds in becoming a monarch by succession of the throne; or any person exercising power in violation of the constitution , Are all usurper. The usurper can also be extended to a person who, in addition to his power or jurisdiction (authority), makes a public action beyond authority. In the Chinese dynasty dynasty, the usurper situation in the Yuan Dynasty was extremely serious, because in the Yuan Wuzong to Yuanning were 25 years, even for the eight emperors, among them three emperors reigning even less than a year. ...