Gerasans

Gerasans t1_j6ibqyb wrote

I just read that one of the main reasons why humans switched from bronze to iron is that iron ores are widely available, so after we could not made bronze - we need to replace it. What if we wouldn't have needs to replace it?

Also there were no needs to build skyscrapers in middle ages and ancient times.

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Gerasans t1_iyxrlt6 wrote

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