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It didn’t take long to find that wheeled wagons could possibly be used to carry heavy loads. The historical Sumerians used a potter’s wheel and may have invented it. A stone pottery wheel discovered within the city-state of Ur dates to round 3,429 BCE, and even older fragments of wheel-thrown pottery have been found in the same space. Fast potters’ wheels enabled early mass manufacturing of pottery, however it was the use of the wheel as a transformer of power that revolutionized the application of nonhuman energy sources. The first two-wheeled carts had been derived from travois and were first used in Mesopotamia and Iran in around 3,000 BCE.

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