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秦王嬴政統一天下，建立秦朝
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秦始皇派蒙恬率兵三十萬北伐匈奴；後築萬里長城，鞏固邊防。
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下令燒非秦國書和坑殺儒士
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秦始皇病死沙丘，秦二世繼位
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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.