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The plow was invented by the Sumerians in Mesopotamia (modern-day Iraq) in the 4th millennium BC (around 3000 BC).To work with a plow, first ensure it is securely attached and the controller is functioning. Then, operate it slowly and steadily, using the controller to lower and angle the blade as needed, typically by first angling the blade to push snow to the side. The plow is the basic tool for growing crops.