Role: to accelerate the process of the First World War accelerated the failure of Germany and the Allies, while increasing the military forces of the Allies, why the United States to participate in the First World War, first of all from the nature of a war.

Role: To speed up the game, speeding up the process, such as Germany's allies failed, as well as enhance the allies of the United States military, Why Participate in a war, first world war from the nature.

Function: Accelerates a war advancement, accelerated Germany to equate the allied country the defeat, simultaneously strengthened the allies military force, why US attended a war, first from the nature which as soon as fought looked.

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