Antebellum architecture (meaning "prewar", from the Latin ante, "before", and bellum, "war") is the neoclassical architectural style characteristic of the 19th-century Southern United States, especially the Deep South, from after the birth of the United States with the American Revolution, to the start of the American Civil War. Antebellum architecture is especially characterized by Georgian, Neo-classical, and Greek Revival style homes and mansions. These plantation houses were built in the southern American states during roughly the thirty years before the American Civil War; approximately between the 1830s to 1860s.