What significant constitutional change occurred with the Constitution Act 1982?

The Constitution Act, 1982 represents a pivotal moment in Canadian constitutional history as it effectively patriated the Canadian Constitution from the United Kingdom, thereby ending the UK's legislative authority over Canada. Prior to this act, any amendments to the Constitution required approval from the British Parliament, which constrained Canada's autonomy in its own governance. The patriation allowed Canada to amend its Constitution independently, signifying a full legal sovereignty that aligns with the principles of self-determination.

The act also introduced the Canadian Charter of Rights and Freedoms, which enshrined individual rights and freedoms in the Constitution, significantly impacting Canadian law and society. However, the key takeaway regarding the constitutional change is the cessation of the UK's legislative power over Canada, enabling a newfound autonomy in constitutional matters. This structural shift created an essential foundation for Canada's evolution as a fully sovereign nation with its constitutional framework held entirely within its own legal system.