Question

Archduke Franz Ferdinand was assassinated in June of 1914. After much hand-wringing and indecision on the proper response, Austria-Hungary declared war on Serbia in August of 1914. Europe was entangled in a series of complicated alliances that involved both Serbia and Austria. Serbia was allied with Russia, which was allied with France. While Britain was in agreement with, but not yet in a formal alliance with France, Austria and its ally Germany formed the Central Powers, and by the end of August 1914 all these nations were at war.

This is happened in :
a. World war I
b. World war II
c. World war III

Answer 1

The answer is A , the assassination of Archduke Frank Ferdinand was one of the main reason for the start of the war.

Answer 2

I believe that the correct answer is A. World War I