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Assiniboine & Gros Ventre

1640 – present
Native nationNorth America

The Milk River nations, middlemen of the northern fur trade.

Fort Belknap and Fort Peck remain homelands; Fort Peck's buffalo now seed herds across the plains.

Borders in 2026 · drawn from 2 sourced border frames
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Borders over time

The atlas holds 2 border frames for Assiniboine & Gros Ventre — the shape you scrub through changes in 1640 · 1888.

Further reading

Sources