Seven Sisters (oil companies)

The Seven Sisters were a group of seven major international oil companies that dominated global oil production and refining from the early to mid-20th century. They included companies like Exxon (formerly Standard Oil of New Jersey), Shell, BP (British Petroleum), and others. These corporations controlled vast oil reserves, refining capacity, and distribution networks, shaping global energy markets and geopolitics. Their influence declined in the late 20th century due to the rise of national oil companies, deregulation, and changing industry dynamics. Today, their legacy remains significant in understanding the history of global oil industry development.