A more pacific Canada

What if Canada had a larger Pacific Coastline?

Canada gets a Columbia River boundary in 1846.
The Alaska Panhandle dispute is settled in Canada's favor, with the US keeping the ABC islands but Canada getting most of the panhandle (including Juneau).

Let's treat most of political history up until the early 20th century as OTL. Washington wasn't a state until 1889 for example, so I don't think too much politically would be impacted until then.
 
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