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Alfred Nobel invented a safe way of using explosives.
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Hiram Maxim invented the first machine gun.
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World war one began.
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Grarret Augustus Morgan an African inventer invented the first gas mask.
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World War two began.
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.