how does the catholic country reformation relate to council of trent and index of forbidden books

The Catholic Church's response to the Reformation was the Council of Trent (1545-1563). This council was convened to address the issues raised by the Reformers and to reaffirm the Church's teachings. One of the results of the Council of Trent was the Index of Forbidden Books, which was a list of books that were deemed to be heretical or otherwise dangerous to the faith. The Index was intended to protect Catholics from being exposed to dangerous ideas and to prevent the spread of heresy. The Index was regularly updated and remained in effect until 1966, when it was abolished by Pope Paul VI.