Answer:
1. M.A.I.N. = Mania, Animosity, Idolatry and Nuance
2. Idolatry was a main cause of Worl War One because people put their leader above all others priot to the war. BAsically saying my dad can beat up your dad but on a much larger scale.
3. Nuance - Since all of the countries in europe spoke different languages, people in the different countries could not understand what each ther was saying. It's like reading a text from your BFF, you think they are mad but in reality they aren't. It's all in the interpretation of what they are saying
Explanation:
D all 3 of them would be causes
