alternatehistory.com

Exactly what it says on the tin. The challenge is as follows:

With a POD after 1000 BC, have an independent polity control (by 2000 AD) the better part of British Columbia, Washington, Oregon, Idaho, and Northern California, but not extend too far beyond that, though colonies are acceptable.

The polity can have any culture or nationality, though I'll give extra points for creativity (eg: a founding nation that is not Anglo-American or Chinese).
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