God save Mark Carney, the man with the simple job of completely remaking Canada's economy

Open this photo in gallery: Prime Minister Mark Carney speaks to his supporters after winning the federal election on April 29, in Ottawa, Ont.Andrej Ivanov/Getty Images John Rapley is a contributing columnist for The Globe and Mail. He is an author and academic whose books include Why Empires Fall and Twilight of the Money Gods. Why does Canada exist? That was the unanswered question in the background of the election campaign, placed there by Donald Trump's insistence that Canada really ought to be an American state. Answering it is urgent for Prime Minister Mark Carney, the election winner. If commissioned…