How did the Alliance System help cause WW1?

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mkoren | Middle School Teacher | (Level 3) Senior Educator

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The Alliance system was one of the causes of World War I. Prior to the war there were two alliances. One was the Triple Alliance. This included Austria-Hungary, Germany, and Italy. The other alliance was the Triple Entente. This included Soviet Union (Russia), Great Britain, and France. The danger of these alliances is that if a member from one alliance declared war on a member from the other alliance, the conflict would quickly escalate. That is what happened in World War I.

When the next king of Austria-Hungary, Franz Ferdinand, was assassinated by a group of Serbian nationals, Austria-Hungary made a series of demands on the government of Serbia. When the government couldn’t meet all of these demands, Austria-Hungary, with the support and approval of Germany, declared war on Serbia. Since Serbia and Russia were very close friends and allies, Russia declared war on Austria-Hungary. Germany then declared war on Russia. France and Germany then declared war on each other. Eventually, Britain declared war on Germany when Germany invaded the neutral country of Belgium. Thus, what was originally a conflict between Austria-Hungary and Serbia quickly escalated into World War I, involving many countries throughout the world.

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