Eight years ago, an economist produced a new theory that international trade played a major role in an American tragedy: the immense killing in the late 19th century that brought the North American bison close to extinction.
The idea challenged the narrative that the slaughter of the bison, or buffalo, was mainly caused by the eagerness of American and European settlers to turn grasslands into farms and move American Indians off the land.
Donna Feir, an economist at the Federal Reserve Bank of Minneapolis was a graduate student in Vancouver when the new theory emerged, and it still left a big question for her: "My first thought was what happened to the people that were relying on this animal?" she said.
She and two colleagues at her Canadian teaching institution, the University of Victoria, recently published an answer that seems obvious on the surface, yet bold and provocative in its detail. The bison slaughter, they concluded, created so great a loss of wealth for the tribes that most relied on the animals, that it has lasted up until now.
The tribal nations that were bison-reliant in yesteryear have per capita incomes today that are 20 percent to 40 percent below the average of all American Indian nations, their research showed.
With the paper, called "The Slaughter of the Bison and Reversal of Fortunes on the Great Plains," Feir and colleagues Rob Gillezeau and Maggie Jones joined a growing number of researchers who have combined contemporary ideas about human behavior with new methods of data analysis to explain history through the prism of economics.
Such work has moved beyond academic circles into books and articles that, for instance, have reshaped popular understanding of wealth along gender and racial lines. Feir describes it as studying the "long arm" of history — "how historic shocks carry forward in fundamental and important ways."
She and her co-authors wrote that the bison slaughter and shunting of American Indians onto reservations hold lessons about the danger of relying too much on few resources and the lasting trauma that rapid change can cause.