But this plan never materialized, mainly because the Spanish crown lost control of the regular orders as soon as their friars set course to America. Shielded by their apostolic privileges granted to convert natives into Catholicism, the missionaries only responded to their order local authorities, and never to that of the Spanish government or the secular bishops. The orders local authorities, in turn, only dealt with their own order and not with the Spanish crown. Once a doctrine had been established, the protected their own economic interests, even against those of the King and thus, the doctrines became Indian towns that remains unaltered for the rest of the Spanish colony.