What were Martin Luther's complaints against the Catholic Church?

On 31 October 1517, he published his '95 Theses', attacking papal abuses and the sale of indulgences. Luther had come to believe that Christians are saved through faith and not through their own efforts. This turned him against many of the major teachings of the Catholic Church.

Explanation:

Explanation:attacking papal abuses and the sale of indulgences.

frederick william of brandenburg-prussia trained his son, frederick, to be a hardy soldier. but frederick disliked rifle shooting and horseback riding. unlike his father, he was interested in french literature. he enjoyed poetry and music and, like some others of the enlightenment, he scoffed at religion. his father thought him soft, frivolous and unmindful of his duties. and when frederick refused to put his signature on a right to succession, for a few moments his father strangled him.