Language might be common, but now English is the international, i.e. One World language. And Australi-New Zealand are far more closely tied to Asia; while Canada and the USA are on their own trip
I’ve lately been working with an Australian attorney working from Israel on a case involving an Asian doctor fighting for his UK citizenship. The lynch-pin, uniting all these independent countries is England and the English language. So it was during the Boer War, WW I and WW II. So it is today.