After he was trounced by Ronald Reagan in the 1980 presidential election, Jimmy Carter was 56 and returned home to Plains, Georgia, The town is a speck of cotton and peanut farmland some 150 miles south of Atlanta. It has a population of 700 and a 40 percent poverty rate. It’s also a living museum to Carter, the longest former president in history. In a story by The Washington Post, President Carter says Plains formed him, seeding his beliefs about racial equality, and making him unpretentious and frugal while growing up in a farmhouse during the Great Depression.