Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
Law no. 2444 of 18 November 1923, known as the Acerbo Law, replaced the existing proportional electoral rules with a system awarding two-thirds of Chamber seats to the largest list provided it crossed a relatively low vote threshold. Mussolini's government used the reform to convert an unstable parliamentary position into a durable authoritarian majority in the 1924 election. The law is a central institutional marker of the transition from postwar parliamentary pluralism to fascist domination.
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.