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The Archduke and his wife was murdered by Gravilo Princip, this is a significant event because this was one of the conflicts that led to the starting of WW1.
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conflicts finally made the war begin, this event is significant because this was the start of a world war.
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British soldiers first use poisenous gas and it backfires and ends up killing over 60,000 british soldiers.
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This was one of the largest battles in WW1, about 1,000,000 men were wounded or killed which was one of the bloodiest battles in history at that time.
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British cryptographers deciphered a telegram that was sent to the German minister of Mexico, it was an offer of the mexico territory for the US to join the German cause.
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French soldiers went on strike because they were promised a win but the failure of the battle made them stop fighting.
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The first wave of American soldiers was deployed into battle, this is important because this is the first time American soldiers are put into battle during WW1.
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President Wilson declares his 14 points of peace.
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The Red Barron was killed in a dogfight, this is significant because the Red Barron was a very important man, everyone was trying to kill him.
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This treaty ended the state war between Germany and the allied powers.