I also had this idea, but it can't be something you can get in another place. But for something like potash it might work.

But I think overall it does not really matter. A war is a war, so there will be no real winners.

Here we go again.

Québec makes 80% of the world’s maple syrup. You pretty much can’t get it anywhere else.

Except the USA has its own supply. Vermont would be strongly pro Canadian syrup export tax

Sure, but I am also not sure it's really that essential. People can grumble and either pay or not buy. Potash cannot really be not used in modern agriculture.