Chapter two examines how the foundations of Christian citizenship began to take shape in regional conciliar movements in Spain, coming into maturity with the Crown’s ratification of the Council of Trent in 1564. As the Christian republic of the Spanish Empire became more diverse, the Crown put its weight behind a legal revolution that would provide the Church with a more coherent set of policies. The Catholic Church conceived the Council of Trent (1545-63) as an answer to the Protestant Reformation and a device with which to effect a reform of the administration of the Church.The Spanish monarchy welcomed the Council’s reforms enthusiastically. However, the Spanish incarnation of Tridentine (adj., from Trent) reform was unique, in that it functioned as an instrument of political consolidation that provided the monarchy the tools necessary to create some semblance of uniformity within a growing empire.