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Assassination
Archduke Franz Ferdinand was assassinated by Gavrilo Princip -
WWI
World war one is started because of assassination -
WWI ends
WWI ends with the treaty of Versailles which angers germany. -
WW2
WW2 begins with invasion of Poland by Germany -
Atomic bombs
1st atomic bomb dropped on Japan. Three days later another bomb was dropped leading to Japans surrender.