Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
Signed by Taoiseach Garret FitzGerald and PM Margaret Thatcher on 15 November 1985 at Hillsborough Castle. Gave Irish government formal consultative role in Northern Ireland affairs via the Intergovernmental Conference. Institutional precursor to 1998 Good Friday Agreement framework. Opposed by Unionist parties; replaced by North-South Ministerial Council 1998.
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.