As mentioned by the other commenter,it is called the _bronze age_, so the components of the bronze alloy are part of the discussion. My point is that extended supply chains are vulnerable. And yes, in my view climate was a proximate trigger. However, once triggered, the collapse became more impactful because of the extended supply chains.

> I have no idea where you're from

I'm from the US and looking out my window to the street below I notice that that more than 90% of the vehicles are still running on petroleum. The impact of high petroleum prices seems obvious to me.

An unrelated question, but why do you think petroleum prices are not correlating with with the straight closure. If, as you opine, the world has changed then why did prices rise in the first place? Was it market speculation based on an outdated worldview, or was it something else? I do not know.

[edit:corrected my formatting error]