What did Charles borromeo accomplish?

Charles Borromeo was a key figure in the Catholic Counter-Reformation, known for his role in the Council of Trent, where he advocated for reforms in church practices and education. He established seminaries for the proper training of priests, promoted the catechism, and emphasized pastoral care. As the Archbishop of Milan, he worked tirelessly to address issues of corruption, improve the spiritual life of the clergy and laity, and support the poor and marginalized. His efforts greatly contributed to the revitalization of the Catholic Church during a time of significant challenge.