Sooo basically at this point you must first inherit what is called PEMDAS. After this session you must submit
The main focus city of the Crusades was Jerusalem. The idea was that it was Christian territory, or at least should be Christian territory, and they always went to reconquer it. The fourth Crusade never made it to Jerusalem because they were busy sacking Constantinople which had a lot of troubles due to constant wars of the Byzantine Empire.
Im writing this to finish a challenge
1-the pressure of middle-age church
2-The kings of several German states were sick of paying taxes to Catholic Church so they supported Luther in order to get rid of them
(There are more reasons for sure