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It was invented by Johannes Gutenberg.
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It was invented by Roger Bacon, but the invention of the glasses was attributed to Alejandro della Spina in 1312.
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It was invented in China to create fireworks and weapons.
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There are many who claim that the first practical navigation compass was invented in China, but we don´t know exactly when was invented and where.
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The person who invented the paper was Cai Lun
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