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Q&A What geological and chemical changes to the earth's makeup could effectively limit technological advancement

Basically, I want to freeze the technology of earth at a level reminiscent of pre-Industrial Revolution Europe. I'm trying to figure out what substance or material would have to be absent from the...

2 answers  ·  posted 5y ago by John Doe‭  ·  last activity 5y ago by John Doe‭

Question technology geology earth alternate-reality pre-industrial alternate-earth