Conrad wanted war because after achieving glory he thought Gina would finally relent, divorce her husband and marry him
I've explained other factors in another thread.
Honor? France pleaded England to enter the war, crying, " don't you have honor?!" Anti German British Foreign Ministry personnels such as Nicolson and Crowe despaired against Grey's vagueness and deplored England's lack of honor, etc.
Duel was still fairly prevalent at that time. Clemenceau practiced fencing every morning
Unlike the other poll, you can pick out multiple options. Sorry for my keep deleting and revising the poll, this is the last one, no further revisions