In his Report on the Affairs of British North America, Lord Durham proposed that “internal” government be placed in the hands of the colonists themselves and that a short list of subjects be reserved for Imperial control. Janet Ajzenstat maintains that Durham did not intend to formally restrict the authority of the new colonial legislature by dividing power. This paper argues otherwise: that Durham’s recommendation fell squarely within a tradition of distinguishing between the internal and external affairs of the colony. This was the imprecise but pragmatic distinction that American colonists invoked during the Stamp Act crisis as a means of curtailing imperial authority over internal taxation while maintaining their allegiance to the British Crown. It also was a division that Charles Buller relied upon in a constitution for New South Wales that he proposed prior to sailing to Canada as Durham’s principal secretary. Durham likely was drawing upon this tradition when he made his recommendation, a distinction that began to crumble away almost immediately. In the result, Canadians inherited a robust semblance of self-government, just as colonists during the Stamp Act crisis had desired, but without the need for revolution.
This is from David Schneiderman, a law professor at the University of Toronto. Here is the link.