Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
Comprehensive constitutional reform package negotiated by Mulroney, all 10 premiers, territorial leaders, and four national Aboriginal organisations at Charlottetown 28 August 1992. Proposed Quebec distinct-society clause, Aboriginal inherent right to self-government, Senate reform (Triple-E aspiration), and Canada Clause of national values. Submitted to national referendum 26 October 1992 — rejected 54.3% No / 45.7% Yes with No majorities in Quebec, Manitoba, BC, Saskatchewan, Nova Scotia, and Yukon.
Per invariant 3, reforms are scored by what they did on each channel-separated axis, not by the party that enacted them. This fingerprint is how the policy-match engine finds historical analogues.
Explicit links are curated by the author. Inferred links are hypotheses in the library that test the same axes this policy moved — the framework's answer to "what does the data say about a policy like this?".
Ranked by axis-fingerprint overlap with this policy. Direction match bolded — those are the closest historical analogues. Shape of the match is what drives policy-outcome comparison, not the country or party label.