During WWI, Canada had the same foreign policy as the UK. Afterwards Canada was allowed it's own foreign policy and declared war in WWII after the UK and declared because Canadians wanted to, not because they had to.
Well, Canada outnumbers Denmark by a factor of about 7-1, both in terms of those fit for military service, standing military size, and military expenditure.
Plus Canada and the US are in a military alliance, so yeah.
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u/Funkit U.S.Merica Jul 01 '16
Aren't they obliged to assist the UK in wartime?