whole history about wheel
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The History of The Wheel
The wheel must have an axle that it rotates around. ... Evidence suggests the wheel was in use around 3500 BC in Mesopotamia. The oldest wooden wheels have been discovered in Ljubljana, Slovenia, and date back to 3200 BC. It's believed that they were first used for chariots around this time.
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Explanation:
Early humans in the Palaeolithic era (15,000 to 750,000 years ago) discovered that heavy, round objects could more easily be moved by rolling them than bulky, irregular ones. The realisation was made that some heavy objects could be transported if a round object such as a fallen tree was placed underneath and the heavy object rolled over it. However, diagrams on ancient clay tables suggest the wheel did not materialise for thousands of years until a potter’s wheel was used in Mesopotamia (modern day Iraq) in 3500 BC.
The oldest wooden wheel discovered so far was found in Ljubljana, Slovenia and is believed to date back to about 3200 BC. It was about the same time that the wheel was first used for transportation on chariots. With a need for greater speed and manoeuvrability, the Egyptians created the spoked wheel around 2000 BC, while Celtic chariots a millennium later employed iron rims for greater strength. However, the wheel remained largely unimproved until the 19th Century when Robert William Thompson invented the pneumatic tyre, a rubber wheel using compressed air which paved the way for automobile and bicycle tyres.