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Oct 14, 2018 at 14:42 history edited Pere CC BY-SA 4.0
For example, if our world had just two continents (Europe and Australia) with no islands at midway between them and we assumed the actual technological progress timeline we have had in real world, airships would have been the only alternative to ships for more than half of a century.
Oct 13, 2018 at 21:31 history answered Pere CC BY-SA 4.0