Oil wealth turned the Osage into targets, not beneficiaries

In the early twentieth century, the Osage Nation held mineral rights to Oklahoma land that sat above enormous oil reserves. Because the tribe had negotiated to keep those rights communal and inheritable, individual Osage people began receiving vast quarterly payments known as headrights, making many of them, per capita, among the wealthiest people in the world at the time.

Rather than bringing security, this wealth attracted predation. Outsiders flooded into Osage County to court, marry, manage, and eventually kill Osage people in order to gain legal claim to their headrights. Grann frames this as a bitter inversion: the very resource that should have guaranteed the Osage a prosperous future instead made them uniquely vulnerable, because American law and custom offered almost no protection for indigenous wealth against white opportunism.

The headright system persists today in modified form, and the book treats this arrangement as the hinge on which the entire tragedy turned.

Takeaway: wealth without protective power is not safety — it can be a liability.