Easy.
The Eastern Canada Amateur Hockey Association is formed from teams in the Canadian Amateur Hockey League and the FAHL. Stanley Cup champion Ottawa and Montreal Wanderers join from FAHL and Montreal, Montreal Shamrocks, Montreal Victorias and Quebec Bulldogs join from the CAHL.
Here's another question for those who don't know/have cheated:
What famous sporting item went missing exactly 36 years ago today?
Boxing?What sporting first occurred 114 years ago last Monday?
It' nicked from another board if anyone wants to cheat.
It's close*, but you're not right.
*It's actually miles off...

Boxing?
That did legitimately happen on December 9, 1905 though, I wiki'd it
i did check the thread you mentioned - honestly, I expected something bigger, though that was interesting.
My left foot !Here's another question for those who don't know/have cheated:
What famous sporting item went missing exactly 36 years ago today?
The first letter is correct...
Just don't know.
I have found out that it was on this day in 1686 that Robinson Crusoe leaves his island after 28 years (as per Daniel Defoe).
Is that it and you got the year wrong...and the first letter...and that it's sporting?
**** it, I'll just give you the answer as I'm buggering off for a bit and I'll probably forget I posted the question in the first place.
Jules Rimet Trophy, aka the World Cup. Was stolen from the Brazilian FA's headquarters in Rio de Janiero on December 19, 1983 and never recovered.

Where's Pickles when he's needed?
Here's the answer to the OP, now I've copied how to do the spoiler thing off you.
The answer to the OP is it was the first time ever that anyone’s national anthem was sung before an international sporting event
The crowd sang it in response to New Zealand doing that Hokey Cokey dance of theirs
.
You mean this dance ?Where's Pickles when he's needed?
Here's the answer to the OP, now I've copied how to do the spoiler thing off you.
The answer to the OP is it was the first time ever that anyone’s national anthem was sung before an international sporting event
The crowd sang it in response to New Zealand doing that Hokey Cokey dance of theirs
.