Question

Which series of events led to World War I?
a. Austria-Hungary declared war on Serbia, Russia moved to support Serbia, and Germany declared war on Russia.
b. Austria took over Bosnia, Serbia declared war on Austria, and Germany declared war on Serbia.
c. Germany declared war on Serbia, Russia moved to support Serbia, and Great Britain declared war on Russia.
d. An Austrian-Hungarian nobleman was assassinated, Germany moved to support Austria, and Great Britain declared war on Germany.

Answer 1

WWI started:
28th June 1914 - Murder of Austria-Hungry archduke Franz Ferdinand In Sarajevo By Gavrilo Princip a Serbian Student.
28 July 1914 - unhappy at Serbia's response, Austria-Hungry declares war on Serbia.
29th July 1914 - Due to her Alliance, Russia mobilises to support Serbia.
1st August 1914 - Due to the Alliances, Germany declares war on Russia.
3rd August 1914 - Germany declares war on France.
etc.
You can find the answer :)

Answer 2

D?

Answer 3

Look at A.

Answer 4

oh >.<