The two most important factors of the reform movement that you need to know are:
1. few people actually cared about the slight difference in theology, it was the principle
2. this is the cause and starting point of the Protestant/Evangelical Church
This event in history effected the world. The creation of the Protestant/Evangelical Church and the hundreds of thousands of lost lives in the name of religion has forever left a mark on the timeline of religion and caused a ripple effect that was felt through the ages to come. Most notably the changes in the language and imagery of how to love God were transformed and are still seen in each branches practices today.