alternatehistory.com

This idea was brought up in the post-1900 forum and I thought I'd give it a run.

WI, in the late 19th century, instead of allowing Canada to slowly take steps towards eventual independence, Britain straightforwardly disallows it? This leads to pro-independence groups springing up around the country, and the US begins to secretly fund and arm such organizations.

Could a Canadian revolution, with covert American backing, succeed? What effects would it have on North America and Britain?
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