Question: who was the most important person in ww1?
Answer: Sergey Sazonov. ...  Raymond Poincare. ...  Tsar Nicholas II. ...  Franz Joseph I. ...  Theobald von Bethmann-Hollweg. ...  Kaiser Wilhelm. ...  Arch Duke Franz Ferdinand. ...  Gavrilo Princip. Black Hand Operative: Assassinated Arch Duke Franz Ferdinand, triggering the July Crisis.