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An animal would pull a plow that would have a sharp stick on the bottom going through the ground creating a rut
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They put a iron knife-like blade that could cut through roots
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Opening of grasslands greatly increased the worlds food production capacity
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.