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They did use screws. They also used an Inclined pane- A sloping ramp thay gradually builds in size along its surface. It was used by the Egyptians o carry large stones up to the top of pyramids. It reduces the amount of force is put into the lifting. Easier than lifting the object straight up, they will do less work . also used Gears, wedge, lever pulley and hammers.

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14y ago

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