[xondono]

> Those referendums were about constituting the regions as Autonomous Communities (what in USA is an “state”), or about updating their “estatuto de autonomía” (declaration of state)

First, comparing the autonomous communities to states is ludicrous. The legal standing is very different.

> updating their “estatuto de autonomía”

This is technically part of the Spanish constitution, not that it matters because they're never uphold.