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he is murdered by Gavito Princip who is a member of the black which a group who does not want to to be controlled by Austria Hungary. Then WW1 starts because of entanglement of alliances.
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germany declares war on france for mobilizing troops and supporting russia
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they declared war on Germany after they invaded Belgium and decided no to leave the neutral country.
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the first battle in which chemical warfare is used it is used by the germans
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this is when the first landing craft land in the Gallipoli peninsula which would soon turn into a huge battle.
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a german U-boat sank lusitania a year after the war started and after great Britain created a naval blockage
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a huge battle that started in France between the germans and the allies this battle would wipe out whole french towns the french also suffer some 700,000 casualties.
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the US is given the telegraph where the germans tell Mexico to form and alliance with them and to attack the US if they declare war on Germany.
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around the end of the war the russian revolution is a success and the red army overthrows the tsar.
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after receiving the Zimmerman note congress almost unanimously votes to go to war with Germany
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it made the US be able to abuse it power to the point where the US could prosecute people for speaking out against war.