KnowraSeven SistersLinked fromLinked fromThe 3 pages that link to Seven Sisters, each with the reason it gives.All 3Related 1Narrower topic 1Compared with 11973 oil crisisRelated: The crisis followed decades in which major oil companies held substantial control over production and pricing.OPECCompared with: OPEC’s formation challenged the pricing power these companies had long exercised.Anglo-Persian Oil CompanyNarrower topic: The company became one of these dominant firms through its later Anglo-Iranian identity.