nancylebov (nancylebov) wrote,
nancylebov
nancylebov

Copper production and the fall of empires



This is a chart which seems to show that empires decline well before they fall, as shown by a sharp drop-off in copper production before the end.

I am absolutely not qualified to judge whether this is based on plausible information. If you know some appropriate history, what do you think?

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