Moving carriage with spindles and diesel engine: what they have in common

1. Step 1. Moving carriage with spindles — is part of — Spinning mule. From the jenny.
2. Step 2. Spinning mule — evolved from — Arkwright’s water frame. A hybrid of two machines.
3. Step 3. Arkwright’s water frame — has part — Water wheel. Driven by water.
4. Step 4. Water wheel — works like — Paddle wheel. A water wheel in reverse: instead of water turning the wheel, the wheel pushes the water.
5. Step 5. Paddle wheel — is part of — Tugboat. The first tugboats were paddle-driven.
6. Step 6. Tugboat — has part — Diesel engine. A powerful diesel.

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