Discuss the three landmarks that you consider most important to the phenomenon known as the Protestant Reformation. Why and how were these significant?

Video link https://www.youtube.com/watch?time_continue=760&v=1o8oIELbNxE Questions: 1. Discuss the three landmarks that you consider most important to the phenomenon known as the Protestant Reformation. Why and how were these significant? 2.Which have most deeply influenced and/or survived into our own time?