Question

Who started world war 1

Answer 1

The assassination of Franz Ferdinand, the archduke of Austria-Hungary.

Answer 2

Well from the assassination of Archduke Franz Ferdinand and his wife in Sarajevo on June 28th, 1914, to the Austro-Hungarian declaration of war on Serbia on July 28th Europe went from peaceful prosperity to a conflict that would bring down four empires and cost more than 15 million lives.

You do the math. lol