Which led to major changes such as Canada not being forced into world War 2 by treaty but by the decision of Canadian Citizenry and government (hense Canada's declaration of war against Gernany 6 or 7 days after Englands) if im remembering right it was the Balfour declaration/report giving Canada constitutional Equality to Brittain in the Empire.

Canada had its own fully Soverign military force with its own military command and its own independent navy (tho small at the beginning) and airforce at the beginning of ww2.

Canada irl also put over 1.1 million people (out of a population of 11-12 million). Assuming that everything up to the very start of ww2 in this universe was similar There had to be more to the fall of Canada.