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Really cool post! Another interesting thing to add about the changing ocean sizes is the effects it had on the tides. When all the land was squished together, the tides weren't resonant with the size of the basin, so they were smaller. But nowadays, the Atlantic in particular has the correct spacing to naturally amplify the tides, meaning more intertidal area where plants and animals thrive, and where people can too.

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I have this hypothesis that more resonant places developed their economies faster because estuaries have such a better economic geography than deltas!

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That’s an interesting thought. If I’m not mistaken, deltas lend themselves better to farming because the soils deposited there are hydrated and nutrient-dense, which seems good for development. In your opinion, what makes estuaries more economical for development?

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