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Canada enters the Great War (-1)
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The War Measures Act (-2)
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Battle of Ypres (-1)
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Women on the Homefront (+2)
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The first women in parliament (+2)
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Halifax Explosion (-2)
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The Canadian Income Tax (+1)
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The Spanish Flu (-2)
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Canada's 100 Days (+1)
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The Treaty of Versailles (+2)
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Residential Schools (-2)
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Inventions and Technological Advancements (+2)