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Archduke Franz Ferdinand was assassinated in Sarajevo, Bosnia and Herzegovina. Archduke Franz Ferdinand was assassinated by Gravrilo Princip.
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Germany offerd the blank cheque to Austria-Hungary and Germany will agree to support action of Austria-Hungary.
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Ultimaturn to Serbia that effectively revoked Serbia's national sovereignty.
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Formal declaration of war.
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After the war was declared bewteen Austria-Hungary and Serbia, Belgrade was under attack.
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Russia and Austria-Hungary started to mobilised their troops, and French withdraw 10km aling the German border.
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Germany demanded Russia to immediately demobilise, while requiring from France.
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A declaration of neutrality in the event of war with Russia.
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Germany and France oreder mobilisation
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Germany formally declared war with Russia
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Germany invaded France and Beligum
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Germany ultimaturn wanted Beligium to stay neutral while German troops march off to France.
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Beligium rejected the ultimaturn
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Britian was brought into war by the Treaty of London.
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War was delcared bewteen Britian and Germany