Statutory and effective corporate tax rates, treatment of depreciation, and international competitiveness.
Progressivity of the personal income tax schedule, including top marginal rates, bracket spread, and targeted credits (EITC-equivalents).
General government spending as share of GDP, excluding transfers already captured under fiscal.transfer_expansion to avoid double-counting.
Environmental regulation stringency — emissions caps, standards, phase-out mandates, carbon pricing, renewable portfolio standards.
The Four Major Rivers Restoration Project, launched by the Lee Myung-bak administration in late 2008 and largely completed by 2012, dredged and embanked the Han, Nakdong, Geum and Yeongsan river systems, building 16 weirs and reservoir structures and around 1,700 km of riverside bicycle paths. Promoted as flood control, water security and a Green New Deal stimulus, the project's environmental costs and procurement irregularities prompted later audits and partial reversals.
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.