This study examines the expression and patterns of alternate history in nineteenth-century Britain and France. “Alternate history” refers to the presentation of events that did not happen in order to consider historical trajectories that might have been and the consequent displacements of present and future. The central chapters of this thesis correspond to the three fields of writing in which these texts are clustered: in narratives of undefeated and resurgent Napoleons, which I trace from the rival journalistic claims made about Napoleon and his historical significance; in accounts that re-imagine the transition from antiquity to modernity, for example by delaying the passage of Christianity from the Middle East to western Europe; and, as...