The best estimate of people that die World War 1 is about 14 million. Germany lost 2 million people, Russia lost 1.7 million, Austria-Hungry lost about 1 million, Great Britain lost 900,000, and many many more people died in the war.
The war cost the allies over 190 billions u.s dollars in 1918. That is $3,232,066.42 in 2014.
The European were peaceful making money and live a happy life. In till the summer of 1914 were their peace ended.
Austria declare war to Serbia in July 28, 1914. they declare war because the shot their prince in Serbia.
Kaiser Wilhelm II express nationalism. some things he said was that Germany deserved nationalism. also that they were the most advance technology and strongest army.