Another answer from our community:

The Catholic Church propably wanted to minimize the damage caused by Protestant reformation by making itself more popular, defining its dogmas and fixing its alleged internal problems. This process is called the Counter-Reformation. Wikipedia has a good article on the subject.

from A Catholic Dictionary, edited by Donald Attwater, Second edition, revised 1957

The Council of Trent The 19th ecumenical council held at Trent in the Austrian Tyrol, 1545-63, summoned for the purpose of combating Protestantism and reforming the discipline of the Church; the longest and one of the most important of all general councils. It dealt in detail with the doctrinal innovations of the Reformers and with those gross abuses which gave them an opportunity to take root. It was one of the most important events of modern history and has had lasting effect. The principal dogmatic decisions were: the confirmation of the Nicene creed; the authenticity of the Latin Vulgate and the canonicity of all books contained therein and of them only; the definition of the doctrine of Original Sin; the precision of the doctrine of Justification, condemning justification by faith alone and imputation of grace; the condemnation of thirty errors about the sacraments; the definition of the Real Presence and of Transubstantiation as its mode: the precision of the doctrine of the sacraments of penance and Extreme Unction; the declaration that holy communion in both kinds was not necessary for lay-people and clerics not celebrating, Christ being received whole and entire under either species; the precision of doctrine concerning the sacrifice of the Mass and the sacraments of holy Orders and Matrimony; the affirmation of the doctrines of Purgatory, of the invocation of saints, and the veneration of them, their relics and images, and of Indulgences. Far-reaching decrees of reformation in discipline and morals were adopted involving many alterations in canon law, e.g. the decree Tametsi.

The Council of Trent was in the years 1545-47, 1551-52 and 1562-63.

from A Catholic Dictionary, edited by Donald Attwater, Second edition, revised 1957

The Council of Trent

The 19th ecumenical council held at Trent in the Austrian Tyrol, 1545-63, summoned for the purpose of combating Protestantism and reforming the discipline of the Church; the longest and one of the most important of all general councils. It dealt in detail with the doctrinal innovations of the Reformers and with those gross abuses which gave them an opportunity to take root. It was one of the most important events of modern history and has had lasting effect. The principal dogmatic decisions were: the confirmation of the Nicene creed; the authenticity of the Latin Vulgate and the canonicity of all books contained therein and of them only; the definition of the doctrine of Original Sin; the precision of the doctrine of Justification, condemning justification by faith alone and imputation of grace; the condemnation of thirty errors about the sacraments; the definition of the Real Presence and of Transubstantiation as its mode: the precision of the doctrine of the sacraments of penance and Extreme Unction; the declaration that holy communion in both kinds was not necessary for lay-people and clerics not celebrating, Christ being received whole and entire under either species; the precision of doctrine concerning the sacrifice of the Mass and the sacraments of holy Orders and Matrimony; the affirmation of the doctrines of Purgatory, of the invocation of saints, and the veneration of them, their relics and images, and of Indulgences. Far-reaching decrees of reformation in discipline and morals were adopted involving many alterations in canon law, e.g. the decree Tametsi.

from A Catholic Dictionary, edited by Donald Attwater, Second edition, revised 1957

The Council of Trent

The 19th ecumenical council held at Trent in the Austrian Tyrol, 1545-63, summoned for the purpose of combating Protestantism and reforming the discipline of the Church; the longest and one of the most important of all general councils. It dealt in detail with the doctrinal innovations of the Reformers and with those gross abuses which gave them an opportunity to take root. It was one of the most important events of modern history and has had lasting effect. The principal dogmatic decisions were: the confirmation of the Nicene creed; the authenticity of the Latin Vulgate and the canonicity of all books contained therein and of them only; the definition of the doctrine of Original Sin; the precision of the doctrine of Justification, condemning justification by faith alone and imputation of grace; the condemnation of thirty errors about the sacraments; the definition of the Real Presence and of Transubstantiation as its mode: the precision of the doctrine of the sacraments of penance and Extreme Unction; the declaration that holy communion in both kinds was not necessary for lay-people and clerics not celebrating, Christ being received whole and entire under either species; the precision of doctrine concerning the sacrifice of the Mass and the sacraments of holy Orders and Matrimony; the affirmation of the doctrines of Purgatory, of the invocation of saints, and the veneration of them, their relics and images, and of Indulgences. Far-reaching decrees of reformation in discipline and morals were adopted involving many alterations in canon law, e.g. the decree Tametsi.

The four decrees were:

1. provide for more clerical discipline

2. remove church abuses

3. reaffirm the sacraments

4. provide a system for education clergy

It was a Council held in Trent in the 15th and 16th centuries in response to the Reformation. One of the main outcomes was the establishment of the seminary system. This moved theology away from the university to a separate system for priests to train. As this happened, the teaching of moral theology became better improved. This led to more people going to confession, which led to a higher demand for priests, which increased the number of priests in seminaries. I'm sure that there are more results, but that's the one that I know about.

had previously been decided.

Answerfrom A Catholic Dictionary, edited by Donald Attwater, Second edition, revised 1957

The Council of Trent

The 19th ecumenical council held at Trent in the Austrian Tyrol, 1545-63, summoned for the purpose of combating Protestantism and reforming the discipline of the Church; the longest and one of the most important of all general councils. It dealt in detail with the doctrinal innovations of the Reformers and with those gross abuses which gave them an opportunity to take root. It was one of the most important events of modern history and has had lasting effect. The principal dogmatic decisions were: the confirmation of the Nicene creed; the authenticity of the Latin Vulgate and the canonicity of all books contained therein and of them only; the definition of the doctrine of Original Sin; the precision of the doctrine of Justification, condemning justification by faith alone and imputation of grace; the condemnation of thirty errors about the sacraments; the definition of the Real Presence and of Transubstantiation as its mode: the precision of the doctrine of the sacraments of penance and Extreme Unction; the declaration that holy communion in both kinds was not necessary for lay-people and clerics not celebrating, Christ being received whole and entire under either species; the precision of doctrine concerning the sacrifice of the Mass and the sacraments of holy Orders and Matrimony; the affirmation of the doctrines of Purgatory, of the invocation of saints, and the veneration of them, their relics and images, and of Indulgences. Far-reaching decrees of reformation in discipline and morals were adopted involving many alterations in canon law, e.g. the decree Tametsi.

Answer

The Council of Trent issued rules to eliminate the abuses of the Church, such as the indulgences for alms, and to improve the quality of the bishops and priests.

The Council of Trent met three times between 1545 and 1563 to clarify Church teachings that had been criticized by Protestants. They also created new rules that clergy had to follow. For example, the Council of Trent said indulgences could no longer be granted for alms, bishops must live in the areas they oversee, and the ideas of Luther, Calvin, and other Reformation leaders are rejected. The Council of Trent played a key role in revitalizing the Catholic Church in Europe.

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from

A Catholic Dictionary, edited by Donald Attwater, Second edition, revised 1957

The Council of Trent

The 19th ecumenical council held at Trent in the Austrian Tyrol, 1545-63, summoned for the purpose of combating Protestantism and reforming the discipline of the Church; the longest and one of the most important of all general councils. It dealt in detail with the doctrinal innovations of the Reformers and with those gross abuses which gave them an opportunity to take root. It was one of the most important events of modern history and has had lasting effect. The principal dogmatic decisions were: the confirmation of the Nicene creed; the authenticity of the Latin Vulgate and the canonicity of all books contained therein and of them only; the definition of the doctrine of Original Sin; the precision of the doctrine of Justification, condemning justification by faith alone and imputation of grace; the condemnation of thirty errors about the sacraments; the definition of the Real Presence and of Transubstantiation as its mode: the precision of the doctrine of the sacraments of penance and Extreme Unction; the declaration that holy communion in both kinds was not necessary for lay-people and clerics not celebrating, Christ being received whole and entire under either species; the precision of doctrine concerning the sacrifice of the Mass and the sacraments of holy Orders and Matrimony; the affirmation of the doctrines of Purgatory, of the invocation of saints, and the veneration of them, their relics and images, and of Indulgences. Far-reaching decrees of reformation in discipline and morals were adopted involving many alterations in canon law, e.g. the decree Tametsi.

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The 19th Ecumenical Council of the Church was summoned for the purposes of 1) reforming the Church, and 2) combating protestantism. The nineteenth ecumenical council opened at Trent on 13 December, 1545, and closed there on 4 December, 1563. Its main object was the definitive determination of the doctrines of the Church in answer to the heresies of the Protestants; a further object was the execution of a thorough reform of the inner life of the Church by removing the numerous abuses that had developed in it. The Council of Trent was called by Paul III who was pope from 1534 to 1549 and it first sat in December 1545.

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from the Catholic Encyclopedia article on the Council of Trent

The Ecumenical Council of Trent has proved to be of the greatest importance for the development of the inner life of the Church. No council has ever had to accomplish its task under more serious difficulties, none has had so many questions of the greatest importance to decide. The assembly proved to the world that notwithstanding repeated apostasy in church life there still existed in it an abundance of religious force and of loyal championship of the unchanging principles of Christianity. Although unfortunately the council, through no fault of the fathers assembled, was not able to heal the religious differences of western Europe, yet the infallible Divine truth was clearly proclaimed in opposition to the false doctrines of the day, and in this way a firm foundation was laid for the overthrow of heresy and the carrying out of genuine internal reform in the Church.

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from A Catholic Dictionary, edited by Donald Attwater, Second edition, revised 1957

The Council of Trent

The 19th ecumenical council held at Trent in the Austrian Tyrol, 1545-63, summoned for the purpose of combating Protestantism and reforming the discipline of the Church; the longest and one of the most important of all general councils. It dealt in detail with the doctrinal innovations of the Reformers and with those gross abuses which gave them an opportunity to take root. It was one of the most important events of modern history and has had lasting effect. The principal dogmatic decisions were: the confirmation of the Nicene creed; the authenticity of the Latin Vulgate and the canonicity of all books contained therein and of them only; the definition of the doctrine of Original Sin; the precision of the doctrine of Justification, condemning justification by faith alone and imputation of grace; the condemnation of thirty errors about the sacraments; the definition of the Real Presence and of Transubstantiation as its mode: the precision of the doctrine of the sacraments of penance and Extreme Unction; the declaration that holy communion in both kinds was not necessary for lay-people and clerics not celebrating, Christ being received whole and entire under either species; the precision of doctrine concerning the sacrifice of the Mass and the sacraments of holy Orders and Matrimony; the affirmation of the doctrines of Purgatory, of the invocation of saints, and the veneration of them, their relics and images, and of Indulgences. Far-reaching decrees of reformation in discipline and morals were adopted involving many alterations in canon law, e.g. the decree Tametsi.

To stop the spread of Protestantism and to reform the Catholic Church

~Ates

To examine and make clear the beliefs and practices of the Catholic Church.

The purpose of the Council of Trent was to refute and condemn the Protestant beliefs that were contradicting Roman Catholic beliefs.

Additionally, Trent formally reaffirmed the Catholic view of the Biblical canon.

To examine and make clear the beliefs and practices of the Catholic Church.

Direct the reform of the Catholic Church.

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from

A Catholic Dictionary, edited by Donald Attwater, Second edition, revised 1957

The Council of Trent

The 19th ecumenical council held at Trent in the Austrian Tyrol, 1545-63, summoned for the purpose of combating Protestantism and reforming the discipline of the Church; the longest and one of the most important of all general councils. It dealt in detail with the doctrinal innovations of the Reformers and with those gross abuses which gave them an opportunity to take root. It was one of the most important events of modern history and has had lasting effect. The principal dogmatic decisions were: the confirmation of the Nicene creed; the authenticity of the Latin Vulgate and the canonicity of all books contained therein and of them only; the definition of the doctrine of Original Sin; the precision of the doctrine of Justification, condemning justification by faith alone and imputation of grace; the condemnation of thirty errors about the sacraments; the definition of the Real Presence and of Transubstantiation as its mode: the precision of the doctrine of the sacraments of penance and Extreme Unction; the declaration that holy communion in both kinds was not necessary for lay-people and clerics not celebrating, Christ being received whole and entire under either species; the precision of doctrine concerning the sacrifice of the Mass and the sacraments of holy Orders and Matrimony; the affirmation of the doctrines of Purgatory, of the invocation of saints, and the veneration of them, their relics and images, and of Indulgences. Far-reaching decrees of reformation in discipline and morals were adopted involving many alterations in canon law, e.g. the decree Tametsi.

from the Catholic Encyclopedia article on the Council of Trent

The Ecumenical Council of Trent has proved to be of the greatest importance for the development of the inner life of the Church. No council has ever had to accomplish its task under more serious difficulties, none has had so many questions of the greatest importance to decide. The assembly proved to the world that notwithstanding repeated apostasy in church life there still existed in it an abundance of religious force and of loyal championship of the unchanging principles of Christianity. Although unfortunately the council, through no fault of the fathers assembled, was not able to heal the religious differences of western Europe, yet the infallible Divine truth was clearly proclaimed in opposition to the false doctrines of the day, and in this way a firm foundation was laid for the overthrow of heresy and the carrying out of genuine internal reform in the Church.

Another answer from our community:

They were reaffirmed and explained. If Martin Luther had understood indulgences to begin with there would never have been any need for all this unpleasantness, or at least he wouldn't have had them to blame it on!

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The Council of Trent met over a period of 1545 to 1563 under 3 different popes. The decree on indulgences was covered near the end of the last session - the 25th.

The Council of TrentThe Twenty-Fifth SessionThe canons and decrees of the sacred and oecumenical Council of Trent,DECREE CONCERNING INDULGENCES.Whereas the power of conferring Indulgences was granted by Christ to the Church; and she has, even in the most ancient times, used the said power, delivered unto her of God; the sacred holy Synod teaches, and enjoins, that the use of Indulgences, for the Christian people most salutary, and approved of by the authority of sacred Councils, is to be retained in the Church; and It condemns with anathema those who either assert, that they are useless; or who deny that there is in the Church the power of granting them. In granting them, however, It desires that, in accordance with the ancient and approved custom in the Church, moderation be observed; lest, by excessive facility, ecclesastical discipline be enervated. And being desirous that the abuses which have crept therein, and by occasion of which this honourable name of Indulgences is blasphemed by heretics, be amended and corrected, It ordains generally by this decree, that all evil gains for the obtaining thereof,--whence a most prolific cause of abuses amongst the Christian people has been derived,--be wholly abolished. But as regards the other abuses which have proceeded from superstition, ignorance, irreverence, or from what soever other source, since, by reason of the manifold corruptions in the places and provinces where the said abuses are committed, they cannot conveniently be specially prohibited; It commands all bishops, diligently to collect, each in his own church, all abuses of this nature, and to report them in the first provincial Synod; that, after having been reviewed by the opinions of the other bishops also, they may forthwith be referred to the Sovereign Roman Pontiff, by whose authority and prudence that which may be expedient for the universal Church will be ordained; that this the gift of holy Indulgences may be dispensed to all the faithful, piously, holily, and incorruptly. Answer:

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from A Catholic Dictionary, edited by Donald Attwater, Second edition, revised 1957

The Council of Trent

The 19th ecumenical council held at Trent in the Austrian Tyrol, 1545-63, summoned for the purpose of combating Protestantism and reforming the discipline of the Church; the longest and one of the most important of all general councils. It dealt in detail with the doctrinal innovations of the Reformers and with those gross abuses which gave them an opportunity to take root. It was one of the most important events of modern history and has had lasting effect. The principal dogmatic decisions were: the confirmation of the Nicene creed; the authenticity of the Latin Vulgate and the canonicity of all books contained therein and of them only; the definition of the doctrine of Original Sin; the precision of the doctrine of Justification, condemning justification by faith alone and imputation of grace; the condemnation of thirty errors about the sacraments; the definition of the Real Presence and of Transubstantiation as its mode: the precision of the doctrine of the sacraments of penance and Extreme Unction; the declaration that holy communion in both kinds was not necessary for lay-people and clerics not celebrating, Christ being received whole and entire under either species; the precision of doctrine concerning the sacrifice of the Mass and the sacraments of holy Orders and Matrimony; the affirmation of the doctrines of Purgatory, of the invocation of saints, and the veneration of them, their relics and images, and of Indulgences. Far-reaching decrees of reformation in discipline and morals were adopted involving many alterations in canon law, e.g. the decree Tametsi.

from A Catholic Dictionary, edited by Donald Attwater, Second edition, revised 1957

The Council of Trent

The 19th ecumenical council held at Trent in the Austrian Tyrol, 1545-63, summoned for the purpose of combating Protestantism and reforming the discipline of the Church; the longest and one of the most important of all general councils. It dealt in detail with the doctrinal innovations of the Reformers and with those gross abuses which gave them an opportunity to take root. It was one of the most important events of modern history and has had lasting effect. The principal dogmatic decisions were: the confirmation of the Nicene creed; the authenticity of the Latin Vulgate and the canonicity of all books contained therein and of them only; the definition of the doctrine of Original Sin; the precision of the doctrine of Justification, condemning justification by faith alone and imputation of grace; the condemnation of thirty errors about the sacraments; the definition of the Real Presence and of Transubstantiation as its mode: the precision of the doctrine of the sacraments of penance and Extreme Unction; the declaration that holy communion in both kinds was not necessary for lay-people and clerics not celebrating, Christ being received whole and entire under either species; the precision of doctrine concerning the sacrifice of the Mass and the sacraments of holy Orders and Matrimony; the affirmation of the doctrines of Purgatory, of the invocation of saints, and the veneration of them, their relics and images, and of Indulgences. Far-reaching decrees of reformation in discipline and morals were adopted involving many alterations in canon law, e.g. the decree Tametsi.
the council of Trent
The Council of Trent was a 1545 Roman Catholic church group that met to discuss church reform.

The Catholic Church is the repository of great wealth and power, making control of the Church finances a tempting target. For this reason, the Church must be continuously introspective and constantly look for ways to improve its governance. In the Middle Ages, cardinals are known to have bought votes so as to become pope and enjoy the wealth and power that comes with the position. This has ceased to be a problem in recent times, but scandals have surfaced in the Vatican Bank and other levels of the hierarchy, requiring vigilance and financial control.

The Church's attitudes to sexual abuse by clergy and lay officials have been shown to be wanting. Once again, this is an area in which the Church must reform itself.

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The Perpetual virginity of Mary

Pope Paul IV, in his Constitution, Cum Quorumdam Hominum, of 1555, expressed the constant teaching of the Catholic Church concerning both the virgin birth of Jesus Christ and the perpetual virginity of Mary:

We question and admonish all those who . . . have asserted, taught, and believed . . . that our Lord . . . was not conceived from the Holy Spirit according to the flesh in the womb of the Blessed Mary ever Virgin, but, as other men, from the see of Joseph . . . or that the same Blessed Virgin Mary is not truly the mother of God and did not retrain her virginity intact before the birth, in the birth, and perpetually after the birth. (In Neuner and Dupuis, The Christian Faith, 217. See CCC, pars 484-486, 496-498, 502-506, 510, 723 (for the virgin birth); pars 499-501, 507, 510, 721 (for the perpetual virginity of Mary))

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In the Middle Ages, "tropes" had developed, these were additions to the chant which was native to the Latin liturgy. the Council of Trent banned them completely, although it did allow polyphony.

In the matter of music, polyphonic music was permitted in addition to the use of traditional chant as long as the texts of polyphonic pieces were not unduly obscured. Tropes were banned entirely and the sequence was suppressed except for a handful of favorites.

from the Catholic Encyclopedia article on the Council of Trent

The Ecumenical Council of Trent has proved to be of the greatest importance for the development of the inner life of the Church. No council has ever had to accomplish its task under more serious difficulties, none has had so many questions of the greatest importance to decide. The assembly proved to the world that notwithstanding repeated apostasy in church life there still existed in it an abundance of religious force and of loyal championship of the unchanging principles of Christianity. Although unfortunately the council, through no fault of the fathers assembled, was not able to heal the religious differences of western Europe, yet the infallible Divine truth was clearly proclaimed in opposition to the false doctrines of the day, and in this way a firm foundation was laid for the overthrow of heresy and the carrying out of genuine internal reform in the Church.