Trade policy openness — tariffs, non-tariff barriers, FTAs, industrial protection.
Targeted industrial and sectoral subsidies (renewable energy, chip manufacturing, agriculture, green hydrogen, etc).
On 20 August 2019 Nigeria partially closed its land borders with Benin, Niger, Chad and Cameroon under Operation Swift Response, formalised into a total land-border closure for goods by October 2019. Stated rationale: stopping rice and petrol smuggling. Effect: cross-border ECOWAS trade collapsed, food inflation accelerated from ~13% to >17% by early 2020, contributed to 2020 recession in coordination with COVID. Partial reopening December 2020, full reopening mid-2021. Occurred one month after Nigeria signed the AfCFTA, visibly contradicting its free-trade 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.