The egyptians invented the ? to water their crops, and may have used the ? to build the pyramids.

The Egyptians invented the SHADUF to help water their crops, and may have used the INCLINED PLANE to help build the pyramids.

The Shaduf is a hand operated device that helped people get water from lakes or rivers. The Shaduf is made with a long pole that is hung by rope or string that is situated on stand. The pole will have the skin or bucket on one end and a counterweight on the other end to help aid with the weight of the water.

The Inclined Plane is a ramp that is tilted slightly with a flat surface that can help carry heavy loads easier upwards. The inclined plane can also be used to slowly lower heavy loads to avoid breakage of the load.

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