Provincial autonomy refers to the degree of self-governance granted to provinces within a larger political framework, allowing them to make decisions and manage their own affairs independently. This concept became particularly significant with the passage of the British North America Act in 1867, which established Canada as a federation, granting provinces their own legislatures and areas of jurisdiction. The shift towards provincial autonomy was a crucial step in recognizing the diverse needs and identities of different regions within the new Dominion of Canada.