There have been several events in history that shook the power of the Church, to name several of the major ones:
The Schism of the East: when the Eastern Rites all broke in half and half left the Church and the Pope.
The Schism of the West: when the Pope moved to Avignon and we ended up with three claimants to the Papal Tiara, and divided all of Europe.
The protestant revolt: which dragged all countries full of Catholics out of the Church because their rulers decided to leave the Church.
It was ether Petrach or Copernicus I think it was Copernicus.
Many people have started heresies to try to 'combat' the Church, but the most well known are probably the Protestant 'Reformers' Martin Luther, John Wesley, John Knox, and Henry the VIII.
There were a few of them but one of the most well known is, Martin Luther.
elizabeth
The Roman Catholic Church was modernized by Vatican II.
The Council of Trent was the most significant event of the Counter-Reformation. It reaffirmed Catholic doctrines and practices, addressed corruption in the Church, and reformed the clergy. This council had a lasting impact on the Catholic Church and its response to the Protestant Reformation.
all of the different christian religions along with catholic moved apart.
When he created the catholic church.
reformation
the council of constance tries to reform the catholic church
BOOM
Marian apparitions are authenticated using the details of the event. The apparition would need to have given a message which is consistent with the teachings of the Roman Catholic church. Additionally, evidence of a miracle is often required.
The Black Plague Strong hostility toward the Catholic Church caused by papal rule. APEX
Martin Luther, a German monk, protested abuses by the Catholic Church by posting his Ninety-Five Theses on the door of the Castle Church in Wittenberg, Germany in 1517. This event is often considered the catalyst for the Protestant Reformation.
The Papal Bull of 1517, challenged the authority of the Catholic Church, by dismissing its highest theological authority the Catholic Council of Bishops. Conciliarism was defeated by the papacy and a new Council was appointed by the papacy to serve the papacy, rather than the Catholic Church. Dr. Martin Luther, a Catholic theology professor at Wittenberg Seminary, posted the 95 Theses in opposition to the papal overthrow of the Catholic Council of Bishops and other heresies committed by the papacy. Dr. Martin Luther was excommunicated in 1521; alongside the Dean of Theology at Wittenberg Seminary, Dr. Andreas Rudolph Bodenstein von Karlstadt who held three Doctorates.
The Council of Trent was a pivotal event in the Catholic Church's history. If a certain conclusion was not reached, it could have had far-reaching implications for the future of Catholic doctrine and practices.