Martin Luther was the reformer who challenged the Catholic Church over Indulgences.
St. Teresa of Ávila was a reformer in the Catholic Church. She was a nun in the Carmelite order.
Because of his heliocentric beliefs.
Martin Luther
The Roman Catholic Church (precisely, against its abuses).
Lollards were followers of the English religious reformer John Wycliffe in the 14th and 15th centuries who rejected certain teachings of the Catholic Church. Hussites were followers of the Czech religious reformer Jan Hus in the 15th century who called for reforms within the Catholic Church and were eventually persecuted for their beliefs.
Gaspar Contarini (Catholic) and Philipp Melanchthon (Reformer)
Any Patriotic who goes about preaching against social evils, such as Sati, Child Marriage etc is a social reformer. For Instance - Raja Ram Mohan Roy is one of the greatest social reformers in Indian history.
Martin Luther is considered the key figure in the Protestant Reformation. In 1517, he famously wrote the Ninety-Five Theses, which criticized certain practices of the Catholic Church. This led to a movement that sought to reform and separate from the Catholic Church, ultimately giving birth to Protestantism.
The Dutch reformer who wrote scathing attacks on the behavior of church officials was Desiderius Erasmus. He was a philosopher and theologian who criticized the corruption and immorality within the Catholic Church during the Renaissance period.
reformer
Henry changed religion because he wanted money,power and divorce. he made him self head of the church instead of the pope.