Carved stone cylinder e automóvel: o que têm em comum

1. Passo 1. Carved stone cylinder — faz parte de — Selo cilíndrico. A stone with a carved image.
2. Passo 2. Selo cilíndrico — funciona como — Gutenberg printing press. An analogy: both a seal and a press reproduce a pre-carved pattern.
3. Passo 3. Gutenberg printing press — evoluiu para — Rotary printing press. Cylinders instead of a flat press.
4. Passo 4. Rotary printing press — tem como parte — Watt steam engine. The first rotary presses were steam-driven.
5. Passo 5. Watt steam engine — faz parte de — Steam carriage. The steam engine.
6. Passo 6. Steam carriage — evoluiu para — Automóvel. Self-propelled vehicles before the combustion engine were steam-powered.

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