The fact that Duke University (German: Erzherzog, English: Archduke) Franz Ferdinand of Austria - Hungary was an element of nationalist Gavrilo Princip Serbian name is assassinated in Sarajevo on June 28, 1914 are considered the origin of this war, but in reality it is just "drop cup overflows." War is "to break out" due to conflicts between the national parties and ripe warring parties have long been preparing for war solve conflicts antagonistic to each other and divide the world. secondary cause is ripe
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