This introduction explains that looming, a nineteenth-century term for a superior mirage, shows us how visions of the future war affected antebellum America. First, some spark, an event or object, captured people’s attention. Second, a unique atmosphere elevated and enlarged that spark, making it loom greater than reality. Before the Civil War was fought or remembered, it was imagined by thousands of Americans who peered at the horizon through an apocalyptic atmosphere. Third, observers focused on it and reported what appeared to be beyond the horizon. Popular forecasts rose from leaders but also women, slaves, immigrants, and common soldiers. These imaginings shaped politics, military planning, and the economy. The prologue identifies the two prevailing temporalities of antebellum America, anticipations and expectations, and calls for more historical attention to the diverse temporalities of past people.
