Dr. Martin Bork

They have this coincidence that the only region they import their grain from happens to be infected already by plague.

We have the volcano, which we don't know where it is, somewhere in the tropics, but it has a major climate impact.

And then we have the famine building up and the reaction of that Italian city-states.

But they have this coincidence that the only region they import their grain from in this situation happens to be infected already by plague.

And that's how it spreads very fast and very efficiently into Italy and probably beyond.

Maybe also explaining how the Black Death arrived to England.