South America and Africa would probably get off pretty lightly. And then they'd experience the worst economic depression that has ever been seen due to the complete collapse of global trade. They're not going to be up for the job of rescuing entire continents.
I spent time in 35 African countries getting as remote as possible. The vast major Of remote peoples lives would not change at all if entire continents were completely destroyed (unless they cop the fallout, or the ash causes crops to fail).
"How is anyone supposed to take that seriously? Is that how Cologne, Dresden, Würzburg and Pforzheim, or Hiroshima and Nagasaki looked a decade after they had been destroyed in Allied bombing raids? The truth is that even after infrastructure gets bombed back to the Middle Ages, life remains surprisingly normal, and people quickly rebuild."
That's what I was responding to.
The world has never seen destruction and fallout that is even remotely comparable to what we’d get.
Why?
Why would it be happening everywhere - in South America, Africa, Asia, and many other places - at the same time?