World War One had a lot of causes. One was the assassination of Austria Archduke Franz Ferdinand. this was the main reason why World War one started in the first place!
And a lot of countries wanted imperialism, when a country expands its power into a larger empire. This made conflict between countries. Another thing I will tell you is that during this time, Europe was already tense. They had formed secret alliances, and also had the desire the grow an empire. Europe was mad already.
I think I DO need a break. See you guys next time!