Answer:
The country Serbia was trying to become independent or reunite with Austria Hungary, so some members of the name "black hand" Made a assassination plot of the Heir to the Austrian Throne, the man Nineteen-year-old Bosnian Serb Gavrilo Princip fired the shots that killed the heir to the Austro-Hungarian empire, Archduke Franz Ferdinand, and his wife, Sophie, during a visit to Sarajevo on June 28, 1914, then Austria Hungary sent a letter telling the small country of Serbia to do a list of unthinkable things, Serbia accepted most of them, but then Austria Hungary declared war on Serbia, Russia, Germany, Britain, And France told them to calm down, this made the war spread more rapidly, this is the reason for WWI
Explanation:
