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Archduke Ferdinand was assassinated by a Serbian. Austria and Germany have an alliance in place, so Austria and Germany start a war against Serbia. Serbia and Russia have an alliance, and Russia has alliances with other European countries etc. This was the spark that started the war.
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Soldiers dug trenches to fight from to provide some safety and ended up fighting from trench to trench.
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Planned German invasion of France.
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Germans bring poison gasses into play in World War I bringing a whole new method of mass destruction of human lives.
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German U-Boat fires torpedo at an American passenger boat.
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Mostly faught in trench warfare, a very bloody battle with many losses on both sides.
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A promise made by Germany to the United States not to fire on passenger ships.
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A message sent by Germany to Mexico to launch a war on the U.S. and it caused the U.S. to form an alliance with France and Great Britain and declare war on Mexico and Germany.
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Convince people to buy military bonds to help fund the military.
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An act that established all males had to register for the draft.
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He became the leader of the AEF in Europe
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Major battle of WWI that stretched along the entire western front.
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The war was over.