Adam Hochschild is the author of ten books, including “Spain in Our Hearts: Americans in the Spanish Civil War, 1936-1939,” which appeared in 2016. “Bury the Chains: Prophets and Rebels in the Fight to Free an Empire’s Slaves” won the Los Angeles Times Book Prize, the PEN USA Literary Award, the Gold Medal of the California Book Awards, and was a finalist for the National Book Award. He has twice been a finalist for the National Book Critics Circle Award.