Trade policy openness — tariffs, non-tariff barriers, FTAs, industrial protection.
General government spending as share of GDP, excluding transfers already captured under fiscal.transfer_expansion to avoid double-counting.
Hungary acceded to the North Atlantic Treaty on 12 March 1999 alongside Poland and the Czech Republic. Preceded by a November 1997 referendum (85.3% YES, 49.2% turnout). Integrated command structure, interoperability reforms, defence modernisation commitments.
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.