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    The Seven Sisters: Oil's Secret Empire

    43 min
    |
    20 sources
    |
    Jan 7, 2026
    BusinessHistoryEconomics

    Discover how seven companies controlled 85% of global oil after WWII, operating like sovereign powers until OPEC and nationalization movements broke their dominance and transformed the energy landscape.

    The Seven Sisters: Oil's Secret Empire

    This audio lesson was created by a BeFreed community member

    Input question

    Summary of the history of the seven sister oil companies

    Host voices
    Lenaplay
    Milesplay
    Learning style
    Deep
    Knowledge sources
    Blowout
    Goliath: The 100-Year War Between Monopoly Power and Democracy
    The Big Rich
    The King of Oil
    The Anarchy
    Titan: The Life of John D. Rockefeller, Sr.

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    Key Takeaways

    1

    The Seven Sisters' Secret Empire

    0:00

    **Lena:** Hey Miles, I was reading about the history of oil companies the other day, and I stumbled upon this fascinating term - "The Seven Sisters." Did you know that for decades after World War II, just seven companies basically controlled the entire global oil industry?

    0:15

    **Miles:** I did! It's pretty mind-blowing when you think about it. These seven corporations - which included names we still recognize like BP, Shell, and the companies that eventually became ExxonMobil - controlled about 85% of the world's petroleum reserves by the 1950s. They weren't just big companies; they were essentially an oligopoly that dictated global oil production, pricing, and distribution.

    0:39

    **Lena:** Right, and the nickname itself has an interesting origin. It was coined by Enrico Mattei, who headed the Italian state oil company, right? I think he was frustrated because his company was excluded from their club.

    0:51

    **Miles:** Exactly! Mattei called them the "Seven Sisters" in the 1950s, and the name stuck. What I find particularly fascinating is how these companies operated almost like sovereign powers. They even signed something called the "Red Line Agreement" in 1928, where they literally drew a red line on a map and divided up oil resources in the former Ottoman Empire between themselves.

    1:13

    **Lena:** That's wild! It's like they were carving up the world. So what happened? I mean, obviously they don't have that kind of power anymore.

    1:21

    **Miles:** Well, that's where the story gets really interesting. Let's explore how the rise of OPEC and the nationalization of oil resources in producing countries completely transformed the global energy landscape and eventually broke the Sisters' dominance.

    2

    The Origins of Oil Oligarchy

    3

    The Mechanics of Global Control

    4

    The Cracks Begin to Show

    5

    The Iranian Catalyst

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