General government spending as share of GDP, excluding transfers already captured under fiscal.transfer_expansion to avoid double-counting.
Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
INF Treaty signed 8 December 1987 between Reagan and Gorbachev in Washington; ratified by Senate 27 May 1988. Eliminated all US-Soviet ground-launched ballistic and cruise missiles with ranges 500-5,500 km. First nuclear-arms-reduction treaty (not limitation). 2,692 missiles destroyed. US withdrawal effective August 2019.
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.