First of all, we'll set aside the modern-day Cascadia movement. Short of a collapse of central authority in the US and Canada, that isn't going to happen. But what would it take to have an independent state in the PNW?
The best idea I can come up with is for it to be a former British colony. So first, we need Britain to gain the whole of Oregon Country (as it was known in the 1800s). Either the Louisiana Purchase never happens (possibly because Britain snagged it first) or Britain is firmer in treaty negotiations.
We also need it to be separate from Canada. I don't know if British Oregon would be organized as a single colony or multiple. The trick is to get some kind of Oregonian identity to emerge, enough for British Oregon to reject Confederation. Given the size of the region and its larger population, I could see that happening, especially if you throw in some American immigrants who might want Oregon to join the US. They wouldn't get their way, but they might push Oregon into becoming a separate dominion. The US would also favor a separate Oregon, in the hopes of at least bringing it into the American sphere. A stronger presence on the Pacific might also induce Britain to buy Alaska, probably giving it to Oregon eventually.
The best idea I can come up with is for it to be a former British colony. So first, we need Britain to gain the whole of Oregon Country (as it was known in the 1800s). Either the Louisiana Purchase never happens (possibly because Britain snagged it first) or Britain is firmer in treaty negotiations.
We also need it to be separate from Canada. I don't know if British Oregon would be organized as a single colony or multiple. The trick is to get some kind of Oregonian identity to emerge, enough for British Oregon to reject Confederation. Given the size of the region and its larger population, I could see that happening, especially if you throw in some American immigrants who might want Oregon to join the US. They wouldn't get their way, but they might push Oregon into becoming a separate dominion. The US would also favor a separate Oregon, in the hopes of at least bringing it into the American sphere. A stronger presence on the Pacific might also induce Britain to buy Alaska, probably giving it to Oregon eventually.