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
Calling it ‘ocean’ is rather misleading. In the middle ages they were just drying out walkable wetlands. This gradually evolved to shallow lakes and coastal area’s, but those can hardly be considered full sea.
Even the poldering of the Zuiderzee in the 1950’s, which was a very ambitious project with the most modern techniques at the time, happened in a sea that was ‘only’ 2-4 meters deep.
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