The Council of Trent (Latin: Concilium Tridentinum), held between 1545 and 1563 in Trento (Trent) and Bologna, northern Italy, was one of the Roman Catholic Church’s most important ecumenical councils.[1] Prompted by the Protestant Reformation, it has been described as the embodiment of the Counter-Reformation.[2] Four hundred years later, when Pope John XXIII initiated preparations for the Second Vatican Council (Vatican II), he affirmed the decrees it had issued: “What was, still is.”[3] (
en.wikipedia.org/wiki/Council_of_Trent)