This third and final analytical chapter of the book presents the results of the QCAs analysing the conditions under which autonomy statutes are conferred for the first time and under which they evolve thereafter. The findings show that legislative autonomy was conferred for the first time when either regionalist threats were present in sub-state communities with strong sociological distinctiveness and political grievances, or when autonomy statutes were conferred for reasons of symmetry to sub-state communities with weaker socio-economic distinctiveness and grievances. For these conferrals, the support of a traditional party and the presence of democratic institutions appeared necessary. Increases of conferred autonomy statutes are shown to occur also under regionalist threats in sub-state communities with strong sociological distinctiveness and political grievances, and for reason of symmetry that existing autonomy statutes were enlarged. Democratic institutions and traditional party support prove to be necessary scope conditions. The decrease of autonomy statutes, in line with the description of traditional party demands, are observed in none of the cases. The disappearing of legislative autonomy statutes, finally, is shown to have occurred either in with the presence of a serious secessionist threat, or with the breakdown of democratic institutions.