Take down the electrical grid for 6 months or more and not only would the country be total disarray but millions would be dead
Food couldn’t be delivered, drugs that keep people alive would go away, etc., people would die
I read the book *One Second After*.
I do realize there is debate about the effect and EMP would have on the electrical grid and some people just obsess about that argument to dismiss the book.
However, the rest of the book, the breakdown of society and the scenarios you give examples of, are dealt with well in the book and give one a LOT of food for thought.