it comes from greek ὀλιγαρχία [0]: from ὀλίγος (olígos), meaning 'few', and ἄρχω (arkho), meaning 'to rule or to command')[1]

[0] https://en.wiktionary.org/wiki/%E1%BD%80%CE%BB%CE%B9%CE%B3%C... [1] https://en.wikipedia.org/wiki/Oligarchy