The Council of Trent met multiple times between 1545-1563 to respond to the Protestant Reformation and clarify Catholic doctrine. It affirmed Scripture and Tradition as equally authoritative, salvation through faith and works, and the need for clergy reform. New religious orders like the Jesuits and communities focused on education, charity, and mysticism emerged and helped strengthen and spread the Catholic faith. Important early American Catholic figures established Catholic institutions in the U.S. during this period of growth.