Little information about World War 1.. hope you get infomation about this `

1. World War 1

2. CAUSE

The first world war began in August 1914. It
was directly triggered by the assassination of
the Austrian archduke, Franz Ferdinand and
his wife, on 28th June 1914 by Bosnian
revolutionary, Gavrilo Princip.

4. 
n 1908, Austria-Hungary took over the former Turkish
province of Bosnia. This angered Serbians who felt
the province should be theirs. Serbia threatened
Austria-Hungary with war, Russia, allied to
Serbia, mobilised its forces. Germany, allied to
Austria-Hungary mobilised its forces and prepared to
threaten Russia. War was avoided when Russia
backed down. There was, however, war in the
Balkans between 1911 and 1912 when the Balkan
states drove Turkey out of the area. The states then
fought each other over which area should belong to
which state. Austria-Hungary then intervened and
forced Serbia to give up some of its acquisitions.
Tension between Serbia and Austria-Hungary was
high.

6. 
The Central Powers were one of the two warring factions
in World War I (1914–18), composed of Germany, Austria–
Hungary, the Ottoman Empire and Bulgaria (hence also known as
the Quadruple Alliance (German: Vierbund)). This alignment
originated in the alliance of Germany and Austria-Hungary, and
fought against the Allied Powers that had formed around
the Triple Entente. The Central Powers regarded the
assassination of Austro-Hungarian Archduke Francis
Ferdinand by several militants as being an act supported by
the Kingdom of Serbia, and given an unwillingness of Serbia to
fully comply with Austro-Hungarian demands for a full
investigation of Serbian complicity in the assassination, war
between Austria-Hungary and Serbia was justified. This resulted
in war with Russia, which opposed Austro-Hungarian intervention
and supported Serbia, and ignited several alliance systems to
bring the major European powers into a major war.

8. 
China during the new imperialism age when the
industrialized European nations forced their way into
China through the use of Opium. While there may be
a formal alliance or other treaty obligations between
the influenced and influencer, such formal
arrangements are not necessary .In more extreme
cases, a country within the "sphere of influence" of
another may become a subsidiary of that state and
serve in effect as a satellite state or de facto colony.
The system of spheres of influence by which powerful
nations intervene in the affairs of others continues to
the present day. It is often analyzed in terms of
superpowers, great powers, and/or middle powers.