The assassination of _________ was one of the triggers for World War I.

A. Archduke Ferdinand
B. Czar Nicholas
C. John Pershing
D. all of the above

Please help, I will give brainliest!

Respuesta :

A. The death of the archduke.
The answer is B because the romanov family stepped down from the throne due to riots and the whole family was killed in a mass shooting.