Movable type printing was introduced to Europe by Johann Gutenberg in the mid-15th century. This technological advance made it possible for a reformer like Martin Luther to spread his ideas widely and rapidly. While overall literacy rates were low at that time, it was common for people to gather for reading of the latest Reformation materials. Hundreds of thousands of copies of tracts written by Luther were printed and distributed -- as well as similar spread of ideas by publishing done by other reformers.
Calm down. Make a list of three adjectives per person listed in your question. Then find like an aesthetic or someone being the adjective (for example :happy-someone smiling) in a photo. This should makes things simple.
C - Historians have different biases and points of view than influence their interpretations
Which is why it it so difficult for historians to arrive at an interpretation of past events that is universally accepted. Most history is also written by the 'victors' so it is typically written from only one POV.