Chii chakaratidza kuderera kweOPEC? Tichifunga nezvemubvunzo wapfuura, nyora mashoko akapoteredza mhinduro yacho. Inogona kuva mitsara 1 - 20. Mashoko akapoteredza:
OPEC yakakurumidza kurasikirwa nenzvimbo yayo yakatanhamara, uye muna 1981, kugadzirwa kwayo kwakapfuurwa nokweimwe nyika. Mukuwedzera, marudzi ayo ari mitezo akakamuraniswa. Saudi Arabia, ichiedza kuwanazve mugove wayo pamusika, yakawedzera kugadzirwa, ichidzikisa mitengo, ichideredza kana kubvisa purofiti yevagadziri vane mari yakawanda. Mutengo wenyika yose, uyo wakanga wasvika pakakwirira mukati menhamo yamagetsi ya1979 pamadhora anenge 40 pamabharero, wakaderera mukati mema1980 kusvika pasi pemadhora 10 pamabharero. Yakagadziridzwa nokuda kwokuderera kwemari, oiri yakadzokera kwenguva pfupi kumwero wapamberi pa1973. Uyu mutengo wo"kutengesa" wakanga uri mubereko usingafungirwi nokuda kwamarudzi anotenga mafuta, ose ari maviri ari kubudirira uye akabudirira.