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Archduke Franz Ferdinand was murdered
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Austria blamed serbia for the death of the archduke and sent an ultimatium
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Austria declared war on serbia and shelled its capital, Belgrade
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The russian army got readly to help serbia defend itself agaisnt Austrian attack Germany warned Russia not to help
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Germany declared war on Russia. It also began to move its army towards France and Belgium
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The french army was put on a war footing read to fight any german invasion
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Germany declared war on frace and invaded Belgium. Britain ordered Germany to with draw from Belgium
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With the Germans still in Belgium, Britain declared war on germany
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