Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
Security of private property rights — formal recognition, expropriation risk, titling systems.
Multi-party Agreement signed 10 April 1998 ending the most intense phase of the Northern Ireland conflict. Established a Northern Ireland Assembly, power-sharing Executive, North-South Ministerial Council and British-Irish Council. Approved in referendums 22 May 1998 (Republic 94.4% Yes; NI 71.1% Yes). Prerequisite and enabler of the subsequent Celtic Tiger cross-border economic integration.
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.