Bit and bridle and windlass: what they have in common

1. Step 1. Bit and bridle — is used in — Chariot. Controlling the horses.
2. Step 2. Chariot — evolved from — Cart. A chariot is a lightened cart.
3. Step 3. Cart — has part — Wheel. A cart rolls on wheels.
4. Step 4. Wheel — is used in — Windlass. A windlass is a wheel and axle used as a simple machine.

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