

Well, static electricity has been well known and well documented since ancient times… that is about the same time as people started talking about fundamental elements.
I guess they just didn’t consider it important enough.
(And yeah, they didn’t know lightning is the same thing.)
There’s no problem. The tariffs on the US side are enough to destroy the US economy already. Canada is only retaliating because their people require that their government hits back.
(And they seem to be retaliating very smartly only on products that won’t hurt their competitivity.)