Why couldn't we all just get along?
That's what President Trump wants to know about the Civil War. In an interview with the Washington Examiner's Salena Zito, our president-historian posits that the war might not have happened if only Andrew Jackson had still been around. The whole thing apparently could have been avoided if only we had a bona fide negotiator — someone more up to the task than Low Energy Abe Lincoln.
You can read the whole exchange at the Washington Post.