The Pre-Civil War South was a period in history that lasted from the early 1800s until the outbreak of the American Civil War in 1861. This era saw the rise of the plantation economy, the expansion of slavery, and the growing tensions between the North and South over the issue of states' rights. When referring to this time period, you could use various synonyms, such as Antebellum South, Antebellum Era, Old South, Southern Plantation Society, or Confederate States. Each of these terms conveys a slightly different emphasis, with some focusing on the culture and society of the South, while others highlight the political and historical context of the era.