Donald Trump’s America was always there, just beneath the surface. You glimpsed it in the crowds, furious but patient, waiting to see him, no matter how long they had to stand in the sun. You heard it in the words of his admirers, who saw him not only as an improvement on our current leaders but as an antidote, a bend in history, an agent of revolution. In the final weeks, there were the accelerants to his fire—the intervention of the F.B.I. director, James Comey, in the Presidential race, a surge in health-plan prices under Obamacare—but none of them alone created his path. Only the people themselves could do that.