 It imported horses and cattle from Spain, took steps to import a printing press, founded the Imperial College of Santiago Tlatelolco for higher learning for young Indigenous men, renewed exploration, and continued work on the cathedral of Mexico City.Enslavement of Indians was prohibited in 1532.The Second Audiencia brought suit against the "oidores" of the First Audiencia Nuño Beltrán de Guzmán, Juan Ortiz de Matienzo and Diego Delgadillo.