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The abacus was invented in 2600 B.C.
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John Napier invented a thing called Napier Bones that allowed you to multiply by adding and divide by subtracting
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A barometer was invented in 1647.
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The power loom was invented in 1801
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In 1834 refridgeration was inventd
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.