Haile Selassie I
In 1966, Haile Selassie attempted to replace the historical tax system with a single progressive income tax, which would significantly weaken the nobility, which had previously avoided paying most of their taxes. Even with alterations, the law led to a revolt in Gojjam, which was repressed although enforcement of the tax was abandoned. Having achieved its design in undermining the tax, the revolt encouraged other landowners to defy Haile Selassie.