Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
General government spending as share of GDP, excluding transfers already captured under fiscal.transfer_expansion to avoid double-counting.
Security of private property rights — formal recognition, expropriation risk, titling systems.
The Nigeria Sovereign Investment Authority Act signed 26 May 2011 established the NSIA to manage three ring-fenced funds: a Stabilisation Fund, a Future Generations Fund, and the Nigeria Infrastructure Fund. Seeded with $1bn in 2012. Intended to replace the legally-contested Excess Crude Account by anchoring oil-windfall savings in statute. Governors-Forum resisted full transition, so ECA persisted in parallel. NSIA survived subsequent administrations with reported AUM of $2.6bn by 2023.
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.