3500 BCE: The Wheel

Although we think of the wheel as a transportation device, it was originally used by ancient Mesopotamian potters as far back as 3500 BCE, and possible earlier.  It took another 300 or so years for the idea to be extended to transportation in Mesopotamian chariots.

The wheel has played a significant part in shaping history and had a variety of early uses and forms including the potters wheel, being used in watermill turbines, transportation, plowing for agriculture, and function as a cogwheel for gears.

The wheel has evolved over time becoming thinner and stronger, developing into different types such as crossbar and spoked wheels, while adding features such as hardened rims and pivoting axles.

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