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The Guardian - UK
The Guardian - UK
Business

Why, if the ancient Greeks had die-cut coins, did we take so long to invent the printing press?

Roman coins.
Roman coins. Photograph: Alamy

We know that in ancient Rome and Greece they had die-stamped coins. Why then did it take until the 15th century for mankind to invent the printing press?

Kris Jones, London, W14

• Post your answers – and new questions – below or email them to nq@theguardian.com. Please include name, address and phone number

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