The wheel was invented in Ur. This answers the unit question: "How does human interest, need and curiosity drive human invention," because the people needed a way to move things more quickly around the city-states. Wheels allowed them to move heavy things they may not have been able to move long distances with just their muscle power. This could allow them to transport inventions, or good that people need. People could also travel more quickly to share ideas with each other. People needed a way to transport things, so they invented the wheel.
We are connected to Ur of the past because we use wheels today. Sure, we put them on cars and bikes for transportation, but they were highly involved in the development of the industrial revolution. Wheels are important in mechanisms to power machines. We transport goods and people with wheels on cars also. Though the citizens of Ur may have used chariots, the idea is the same.
The photo above is a wheel used in Ur.
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