Answer:
The internal conflicts within the Catholic Church led to a decrease in its power of the Catholic Church during the 15th century.
Step-by-step explanation:
The integrity of the Roman Catholic Church had mostly been compromised by 1500. Popes were more concerned with politics than with religion, the Italian War had brought the papacy into contempt, and the sale of indulgences was obviously done only for the benefit of the Church's finances. Many left the Catholic Church as a result of the Protestant Reformation, which diminished its influence.
Humanist ideals, political unrest, and corruption had all but destroyed the Catholic Church. The printing press, the new ideas of the Renaissance, and the growing distrust of Church authority brought on by events like the Great Schism and the Black Plague were the three main factors that reduced the influence of the Catholic Church.