Simplify the following text for a Grade 10 native English-speaking person.
Original: The 95 Theses on the Power and Efficacy of Indulgences , commonly known as The Ninety-Five Theses , was written by Martin Luther in 1517 and is widely regarded as the primary catalyst for the Protestant Reformation .
Simplified: The Ninety-Five Theses on the Power of Indulgences , commonly known as The Ninety-Five Theses , was written by Martin Luther .