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Entry 4 of 240Invention

The Invention of the Wheel

c. 3500 BCE/Mesopotamia/Sumer / Eurasian steppe
Today Debated — Mesopotamia and the Eurasian steppe both claim itSpan Late Neolithic / Copper Age

The wheel arrives surprisingly late — long after agriculture, cities, and even the sailboat — because the hard part was never the wheel but the axle, which must be strong, smooth, and precisely fitted. Its earliest use may have been the potter's wheel, not transport at all. Married to the cart and later the war chariot, it transformed how much a person could carry, trade, and conquer, a reminder that a single mechanical idea can quietly reorganize an entire economy.

◆ Worth knowingThe wheel came thousands of years after farming and pottery — and some societies, like the Inca, built vast mountain empires without ever using it for transport at all.
◆ The mechanismLabor displacement

A new technology destroys and creates work faster than institutions and people can adapt, producing dislocation and backlash.

Also: Trade-route shift · Military-technological disruption

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