Analysis of information sources in references of the Wikipedia article "Amendments to the Constitution of Canada" in English language version.
... the Constitution Act itself cleaned up a bit of unfinished business from the Statute of Westminster in 1931, in which Britain granted each of the Dominions full legal autonomy if they chose to accept it. All but one Dominion – that would be us, Canada – chose to accept every resolution. Our leaders couldn't decide on how to amend the constitution, so that power stayed with Britain until 1982.