Newspaper and aeroplane: what they have in common

1. Step 1. Newspaper — uses — Rotary printing press. Mass print runs.
2. Step 2. Rotary printing press — has part — Watt steam engine. The first rotary presses were steam-driven.
3. Step 3. Watt steam engine — is part of — Ironclad. Steam engines.
4. Step 4. Ironclad — evolved into — Aircraft carrier. The first aircraft carriers were converted from battleships and cruisers.
5. Step 5. Aircraft carrier — uses — Aeroplane. Basing aircraft.

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