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Q&A How to improve the speed of ancient mariners

My world is set in ancient times on a planet similar to Earth, but with a different civilization and different geography (and lots of canals). I need to find a way of giving the inhabitants better ...

3 answers  ·  posted 4y ago by Slarty‭  ·  last activity 4y ago by Slarty‭

Question earth-like technological-development earth science-fiction