Why is the wheel so important?
Why is the wheel so important? First, transport: the wheel began to be used on carts and battle chariots. Second, and more importantly, it contributed to the mechanisation of agriculture (animal traction, crop irrigation) and craft industries (for example, the centrifugal force of the wheel is the basic mechanism in windmills).
What cultures did not invent the wheel?
Over on the other side of the Atlantic, the Aztecs, Incas, Maya, and Native Americans did not become acquainted with the wheel until after the arrival of European colonists during the late 15th and early 16th centuries. Why these societies never invented wheels of their own is unclear.