what is the key word oligarchy
Oligarchy (from Greek á½Î»Î¹Î³Î±ÏÏÎ¯Î± (oligarkhÃ­a); from á½Î»Î¯Î³Î¿Ï (olÃ­gos), meaning 'few', and á¼ÏÏÏ (arkho), meaning 'to rule or to command')[1][2][3] is a form of power structure in which power rests with a small number of people. These people might be distinguished by nobility, wealth, family ties, education or corporate, religious or military control.