The major goal was to try to undo the damage done to the Catholic church by the Protestant reformation. The Council of Trent was called specifically for this purpose. Unfortunately, the Council did as much harm as good in this respect.
Reformation, also called Protestant Reformation.
The Protestant Reformation
There technically is no "Roman" Catholic Church, the Catholic Church has been around for twenty centuries and has had dozens of ecumenical councils in that time. You would have to narrow it down to a specific time period.
The Protestant Reformation.
Counter-Reformation
This was the Council of Trent, which was held at various times in a twenty-year period during the mid-1500's.
It was the Catholic response to the Protestant reformation (also called the Counter-Reformation). It involved greater emphasis on the central power of the papacy, the clarification of a number of core doctrines and the refutation of Protestant beliefs at the Council of Trent, and the growth of popular religious movements at grass-roots levels such as the Society of Jesus to promote Catholic doctrines and root out heretical beliefs.
the catholic church and started a new church called the lutheran church
The Catholic Church began a Counter-Reformation, spearheaded by the members of the Society of Jesus, called Jesuits. Beginning with the Council of Trent, the Counter-Reformation was comprised of several elements: ecclesiastical or structural reconfiguration, spiritual movements, creation of new religious orders, and increasing political dimensions. The Catholic Church recognized and acknowledged the concerns raised by Martin Luther, and by addressing them, created a stronger, more vibrant church that has resisted criticism and carried on for centuries.
religious reformation
The Council of Trent was an ecumenical council convened by the Roman Catholic Church in Trento, the principle city of the Bishopric of Trent, now a part of modern Italy, thus its name. The council had 25 sessions from Dec. 13, 1545 to Dec. 4, 1563. The first 8 session were held in Trent, the next three in Bologna, and the last 14 back in Trent.