i am really surprised on what techniques and materials did they use to actively dry out parts of the ocean, they started in the middle ages and continued for centuries, and now it is almost 25% of their landmass.
In: Engineering
People have been drying out wetlands for a couple of thousand of years, the Renaissance machines just made it more efficient. You stake out a piece of land/shallow water, typically with logs/planks, then you empty out the water inside with buckets, powered by people, archimedes’ screw or later pumps, powered by whatever mechanical energy you have around, people, animals, windmills, etc. Then you make sure it doesn’t get flooded again by building dykes, dams and other structures to modify water flows
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