When the United States and Great Britain drew a line across the northern plains in 1818, they believed they had created a border.

For the Sioux, it meant nothing.

For centuries, the Dakota, Yanktonai, and Lakota moved freely across the vast grasslands that would become the United States and Canada, hunting buffalo, forging alliances, trading with Europeans, and defending their homelands. But as two expanding nations pushed westward, the Sioux found themselves at the center of a geopolitical struggle that neither government fully understood.

Borderlands Nation tells the gripping story of how the Sioux turned the international boundary into a powerful political tool. Moving between empires, traders, armies, and rival Indigenous nations, Sioux leaders used the frontier to negotiate treaties, evade military campaigns, build trade networks, and sustain their communities amid relentless change.

From the aftermath of the Great Sioux War to the refugee camps of Sitting Bull in Canada, this book reveals a hidden history of diplomacy, survival, and resistance in one of North America's most contested landscapes.

Drawing on rich archival sources and Indigenous perspectives, Borderlands Nation challenges the traditional histories of both the American West and Canada. Instead of a fixed dividing line, the U.S.?Canada border emerges as a dynamic frontier where Indigenous peoples shaped events as much as the governments that claimed authority over them.

The result is a powerful new interpretation of North American history, one that places the Sioux and other Plains nations at the center of the story.

For readers of:

· Pekka Hämäläinen's Lakota America

· Elliott West's histories of the American West

· Indigenous borderlands history and North American frontier studies

Borderlands Nation is a sweeping account of a people who refused to be confined by borders, and whose story reshapes our understanding of the North American past.