British North America Acts
The British North America Acts, 1867–1975 are a series of Acts of Parliament that were at the core of the constitution of Canada. Most were enacted by the Parliament of the United Kingdom and some by the Parliament of Canada. In Canada, some of the acts were repealed in Canada by the Constitution Act, 1982. The rest were renamed the Constitution Acts and amended, with those changes only having effect in Canada. The Canadian versions of the Constitution Acts make up the Constitution of Canada, and can only be amended in Canada.
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The British versions of the acts which remain in force in Britain are ordinary British statutes. They can be amended by the British Parliament, but those amendments would not have any effect in Canada. They retain their original names and do not include any amendments made in Canada since 1982.
The term "British North America" (BNA) refers to the British colonies in North America, after 1783.